As kids, Bo and I had a tradition of staying overnight in each other’s rooms. One of us would bring her mattress to the other’s room, and after going to bed, we’d stay up for an hour or two making up campfire stories. Sometimes we’d just talk about whatever went through our minds until we dozed off to sleep.

Bo and I’s worlds became pretty different and we stopped doing sleepovers around when I was twelve. I started going through puberty and discovering sexuality while she was still a child. We weren’t as interested in each other’s lives anymore, spending more time with friends our own age than with each other. Before, it had been pretty even. I don’t mean to say that we grew distant, really. It wasn’t so much growing bored of each other as it was exploring other people and being content without spending several days a week with each other. At least that’s what it felt like for me, but I don’t think Bo would have described it much differently.

I think I found her thong around March 2005. We’d recently turned fourteen and eleven. In April, after spring had already teased everyone for a week or two, our area got a cold spell and even some snow around the end of the month. My family turned up the heaters and we got ourselves snuggly and comfy. It was then that Bo suggested that we hadn’t done an overnighter in quite some time, and I agreed that we should do one, looking forward to silly giggling and catching up with each other.

We lifted her mattress and bed sheets into my room and put them next to my bed. We got into our pyjamas, brushed our teeth and were eager to go to bed, even though it was a Friday and only about 9pm, much to the surprise of mom and dad.

We had a nice time talking for an hour or two. Slowly, we got tired and the breaks in our conversation a little longer. Eventually, Bo asked, “Hey, can I crawl in with you and snuggle up? It feels like that would be great right now. You know, with the icky weather outside and everything. Plus, Max wasn’t really in the mood for cuddling today, so I’ve been missing out.” I laughed, saying, “Sure, crawl on in.”

I could hear Bo’s bed sheets moving in the dark. I made room for her, shuffling toward the wall, and held up the blanket for her to slip underneath. I felt her climbing in, tucked her in, and immediately she snuggled up, lying on her side facing me and pressing herself to me. I laughed at the sudden resolute display of affection. I put my arm underneath her neck and held her, lying on my back.

She made strategical use of her position and planted a peck on my cheek, making me laugh again. I was also starting to grow really warm somewhere in my chest. It had been a long time since we’d been this affectionate with each other. I was feeling very sisterly.

Bo started stroking my hair, and I could see her smiling contently even in the dark because she was so close. I responded by stroking her back with the arm I’d wrapped around her. For whatever reason, the closeness seemed to make it necessary to hold further conversations in a near whisper.

“I’m really happy that you’re my sister, Lisa,” Bo said.

“I’m really happy you’re my sister, too,” I said.

For a while we just lay there stroking each other, and that seemed to be the end of that night’s conversations. We didn’t fall asleep for some time, however, and every once in a while, one of us would shuffle. Bo always stayed on her side and attached herself to me like glue. She kept giving me pecks on the cheek.

At some point, I became aware that aside from just being content from all the sisterly affection and getting cozy in a warm bed on a cold night, it also felt really nice to have my hands full of girl. A girl pressing herself to me, sticking as close as possible throughout every movement, stroking my hair and kissing my cheek.

Fuck.

Fuck! Come on Lisa, it’s bad enough that you’re a lesbian, and that you masturbate, and that you sniff your sister’s panties, but now you’re thinking about Bo this way? Are you that desperate? And she’s only eleven, too…

Some other organ told my brain to shut up for a while and I focused on enjoying all the sensations that were adding up. I could smell Bo’s hair. It smelled like shampoo and girl. I focused on all the areas where our bodies were touching through our pyjamas. I looked into her happy face and kept stroking her back. She gave me yet another peck on the cheek. I laughed and said, “If I kiss you back, are you going to stop doing that? I wanna sleep.” Bo said yes.

I didn’t even know why I’d asked. Maybe it was a defensive reaction because I felt uncomfortable that my sister was kissing me, if only on the cheek. As beautiful as it was, it felt like it was wrong as long as I was thinking about Bo the way I was right now. Or maybe I wanted to give myself an excuse to kiss her back. Probably both.

I tried to turn on my side to face her, but every inch of mine that moved away from her in the process, she instantly tried to fill up again. We were both giggling at how determined she was to stay glued. “God’s sake!,” I whispered. She just giggled back, not subduing her efforts in the least. Once I was on my side, Bo wrapped her arm around me and pressed herself to me chest to chest, stomach to stomach. She even placed one foot on my ankle. I kissed her on the cheek.

We just held each other, with an unspoken challenge of who was first going to make a move to go back to a sleeping position. After five minutes or so, it became clear to me that it wasn’t gonna be her, so I shuffled around in order to lie on my back. She tried to stay stuck.

By the time I was done shifting around, Bo was half lying on top of me with one arm across my chest, one leg placed over my legs and her head resting on my shoulder. I was way too uncomfortable, or more accurately put, way too comfortable. I laughed and said, “Bo, I can’t sleep like this. Please get off me.”

She let out a mock sigh, but did roll around. She said, “Can I still use your arm as a cushion? It feels really nice when you hold me.” I actually found it comfortable myself, so I said yes. Thankfully, I fell asleep pretty quick.

When I woke up with Bo still in my arm, I was determined that this was not going to be the last overnighter that year. Or that month. Or that weekend. I just lay next to her watching her sleep. I enjoyed gazing at her, and it only felt partially inappropriate. I was feeling very sisterly, too.

Bo woke up not long after me. Her first sign of waking was a drawn-out sigh as she lazily turned on her side to face me. She put her head on my shoulder and one arm across my chest.

“You awake?”, I asked. Bo took a few seconds to answer.

“Kinda”, she said with a half-frown, her eyes still closed. I giggled, but shut up.

We just lay there lazily for a while, not moving much. We weren’t in a hurry to leave the warmth and comfort of the blanket. After some fifteen minutes, Bo said, “I slept reeeally well next to you. Thanks for letting me sleep in your bed.” She kissed me on the cheek, then scrambled out of bed. I could get used to those kisses, I thought.

When Bo stood free, she looked at me in horror and dove onto her own mattress, kicking around wildly while trying to get under the blanket. When she had accomplished that, now completely out of view, she lay on her stomach totally still. After a few seconds, we both broke out in laughter.

“Is it that cold?”, I asked.

“Come out and see. While you’re at it, you can turn up the radiator”, she ordered. I laughed.

“You’re closer!”, I said.

“Don’t. Care”, she said emphatically.

“You can probably reach it from your mattress!”, I said.

For a few seconds, nothing happened. Then I saw her arm reach slowly out of the blanket. She almost made it to the dial, but not quite. She let her arm drop to the ground. “Nope”, she said hopelessly.

I let out a mock sigh, got up, walked to the radiator and turned it up. I walked past Bo back to my bed; then, when I knew she couldn’t see me, I hurled myself at her. I jumped so that my limbs landed around her and my torso hovered over her. She shrieked loudly. I let myself drop and pinned her down.

“So you don’t wanna get up, huh?”, I said. She was laughing by now, struggling to get out.

“I do, I do!”, she proclaimed, her efforts futile.

“What’s the codeword?”, I demanded.

“I don’t know!”, she cried, still struggling.

“Then you can’t go”, I stated.

She suddenly stopped moving and lay still again. Then, in what she hoped was a surprise move, she gathered all her strength, trying to throw me off, but still no dice.

“Please lemme go!”, she said.

“That’s not the codeword”, I said.

“Wait, I know, I know!”, she proclaimed. “But I need to whisper it into your ear.” I put my face down next to hers, and she kissed me on the cheek again.

“That’ll do”, I said, freeing her.

That Saturday night, we got ready for bed in the bathroom. We brushed our teeth together but changed into our pyjamas separately while the other one went out of the room. I think we started doing that when I was around ten and I felt awkward about my body changing. I went upstairs to my bedroom first and got into my bed.

“Wanna stay overnight again?”, I said when Bo walked through my room to get to hers.

“Yes”, Bo said happily. “I’m gonna get the mattress.”

“Well, it’s still cold outside”, I said. “Wanna sleep in my bed again, for extra warmth?”

“Okay”, she said, smiling. I smiled back, holding up the blanket for her. She crawled on in and I tucked her in. Immediately, she snuggled up to me. I played with her hair for a while, then kissed her on the head.

“That’s not a proper goodnight kiss”, she said, showing me how it actually worked by kissing me on the cheek. “Good night, Lisa.” I smiled and kissed her back.

“Good night, Bo.”

The next night was a Sunday night. We had school the next day, which meant different bedtimes for us, so we ended up sleeping in our own rooms. Bo had a 9pm curfew, while I could stay up till twelve if I wanted to, which I usually did. I’d chat with online friends from the US, for whom it was only the early afternoon… or masturbate to porn. I had gotten my own PC for my birthday so I didn’t have to use mom’s downstairs, but I needed to be quiet when Bo was in her room next door.

The weekend after, I really wanted Bo to sleep over again, but I’d already started to be afraid of being found out. I didn’t want Bo to suspect that I had more than just sisterly feelings for her. I thought it might seem suspicious if I wanted to have her sleep over all the time, so I waited for her to ask me instead. She didn’t, and I cursed myself for pussyfooting. She didn’t ask the next two or three weekends either, but then one Friday in May, she sat down on my bed while I was sitting at the computer.

“You wanna sleep over in my room tonight?”, Bo said.

“Sure”, I said, trying and probably failing not to sound too giddy about the prospect.

“I know it’s not cold anymore, but you don’t need to bring your mattress if you don’t want to”, she said. Inside I cheered, happy about setting that precedent last time, but I stayed cautious.

“Are you sure you want me crammed in there? Your bed’s smaller than mine. And it might get too hot eventually”, I said.

“I don’t think I care. If it gets annoying, you can still go get your mattress”, she said.

“Okay”, I said.

When we were ready for bed, I followed Bo to her room. She got into bed first, getting herself comfortable, then held up the blanket for me like I had done for her. She smiled, saying, “Get on in.” I was happy to do just that.

We talked about this and that, stuff that had happened since the last sleepover, reciting quotes from SpongeBob (Bo knew the dialogue from most episodes by heart), et cetera. As our conversation thinned, I lay facing her. I lifted her head to put my arm underneath her neck, and she turned to face me, too.

We just smiled at each other for a while until Bo gave me a peck on the cheek, then she moved back to just smile at me. God, I’ve missed those, I thought and kissed her back. We went back and forth for a while, with small breaks in between kisses just spent smiling at each other. Then she said, “I didn’t think I could like you this much someday.” She was blushed, still smiling. “Yeah, same here”, I said.

After she kissed me once more, I gathered up all my courage, thinking, now or never. I kissed her on the lips. Just a small peck, like those before. Only the destination was different. She gave me a surprised look.

“Hmm?”, I asked, pretending that nothing had happened.

“You just kissed me on the lips”, Bo said.

“I guess”, I said.

“But we’re sisters”, she said.

“And?”, I said.

“Sisters can’t do that”, she said.

“If you didn’t like it, I won’t do it again”, I said.

“That’s not the point”, she said.

“Hmm?”, I asked, playing dumb.

“I liked it, but you’re my sister”, she said.

“I’m your sister, but you liked it”, I replied. She didn’t say anything to that, so I said, “If you liked it, then what’s the harm in it?” She still didn’t say anything, seemingly thinking. After a while, I said, “I’m sorry”, and gave her another peck on the cheek. “Do you still like me?”

“Of course, silly”, she replied smiling, and kissed me back on the cheek. She closed her eyes, and that seemed to be the end of that conversation for tonight. After a while, she fell asleep.

I woke up the next morning with Bo still in my arms as usual. I gazed at her beautiful face a few inches from mine and marveled at the sensations of being snuggled up to her, feeling her hair on my skin and the weight of her neck on my arm.

I was incredibly horny.

Bo was still sleeping. I managed to pull my arm out from underneath her without waking her up. I got up, walked into my room and closed the door. I got into my bed, slipped underneath the blanket, put my hand in my pyjamas and masturbated, trying not to make a sound.

After I came, I just lay there with my hand still down my pants, eyes closed with Bo’s mental image before them, wondering what I had gotten myself into. Some twenty minutes later, Bo walked into my room. I thought that panicked movements might give me away, so I left my hand where it was, hidden by the blanket.

“Morning”, I said, smiling.

“Why did you leave?”, Bo enquired.

“I just had to move and stretch a bit after basically cuddling all night. Your bed is kinda small for two”, I said. “I didn’t wanna wake you up, so I came over here.” I felt myself blush when I realized the unintended innuendo, but of course Bo didn’t notice.

“Don’t do that again. I like waking up next to you, that’s part of the fun of sleeping over”, she said. That’s gonna be pretty hard, I thought, feeling my pussy pulsing against my palm.

“Okay”, I said. Bo smiled.

“See you downstairs”, she said and left.

The second Bo closed the door, my fingers started moving again.

We were in our own beds the next night when I heard Bo calling from her room.

“Lisa?”

“Yeah?”, I replied.

Bo didn’t say anything else, so I got up and opened the door to her room. She was smiling, holding up her blanket. I smiled back, closed the door and crawled on in with her. She snuggled up to me and our little game started again. Peck on the cheek. Smile at each other. Kiss back. Smile at each other.

I decided to try my luck again. I gave her a peck on the edge of her mouth; not really on the cheek, not really on the lips. She looked a little bemused, but still smiled. Her next peck went on my forehead. I decided to play, giving her a peck near her ear. She giggled and kissed me on the nose.

My next one was fully on her lips. Just a small peck like all the others, but I went for it decidedly, going for maximum sound effect, too. Smack! Her eyes widened with surprise.

“Lisa!”, Bo said.

“Hmm?” I smiled.

“You can’t do that”, she said.

“Why not?”, I asked.

“Because we’re sisters.” She said it slowly, as if I had forgotten about our recent conversation and needed to be reminded like a little child.

“Why are all the other spots okay, but that one isn’t?”, I asked, not annoyed, just curiously. That had her thinking.

“Only lovers kiss each other on the lips”, she said eventually.

“But you liked it, right?”, I asked. Bo thought about it.

“Yes.”

“Then why can’t I kiss you there? Why should only lovers enjoy those?”, I asked. Bo pondered it for a while.

“Besides, we’re both girls, right?”, she said. I felt a sting somewhere in my chest. Girls can be lovers, too, I thought. But that wasn’t going to help my case, so instead, I smiled.

“We sure are”, I said. Bo smiled back and gave me a peck on the lips herself.

“Did it hurt?”, I teased, grinning.

“Shut uuup”, she said, blushing. I ruffled her hair, and she giggled. We feel asleep soon after.