Chapter 13 – The Lessons Continue Over the next few weeks I almost always had one, or more usually two, girls in my bed each night. We continued our sexual activities but as is often the case the tempo slowed down a bit. Many nights it was just cuddling and some gentle kissing. Occasionally Ashley would decide she wanted to do something new and Tara would sleep in her own bed. Tara wanted it to be just her and I when we had intercourse but one Friday night she agreed to allow Ashley to come in and watch. That night was one of the most erotic nights I've ever had. Tara had me lay on my back and she got on top. "So Ashley can see what happens." was Tara's explanation. Tara had got used to having her clit stimulated and if I didn't do it, she would do it herself. She loved it when I lightly pinched her nipples and if I ran a finger over her anus. That night I chose to do both of those while she was playing with herself. I happened to look over and saw Ashley with several fingers working on her own clit and pinching her own nipples. That picture was all it took to make me cum and cum I did. As soon as I started to cum, Tara joined me and came herself. Once we'd come down from our high, Tara pulled up off me. I was astounded to see Ashley lean over and take my cock into her mouth. She'd seen Tara giving me a blowjob but had never done it herself before. Once my cock was clean she saw that there was cum on my stomach and on my legs where it had leaked out of Tara. Ashley started to lick all of that up and without saying anything moved so that she could lick it off of Tara's pussy lips. "Your stuff tastes good, Daddy." she said. I looked over at Tara who was looking shocked. "Are you all right?" I asked her. Tara nodded her head. "Dad... I didn't expect that and... and... I don't know what." she said. 'Time for a quick discussion about lesbian sex' I thought. "Girls, let's talk about what Ashley did, and no Ashley, it's not wrong." For the next few minutes we talked about lesbianism and I tried my best to answer their questions. Finally I had to stop as the questions were getting into areas that I didn't know about. "Look, if you want I'll phone Grandma Mabel and see if the two ladies can talk to you tomorrow. They can come over here and I'll go to the office for a couple of hours. When you're ready you can give me a call and I'll come home." The girls started looking at one another. "Get off me please sweetie." I asked Tara and then went into the bathroom to clean myself up. I took my time, listening to some whispering. Once the whispering stopped I returned to the bedroom. "Okay Dad, can you do that for us?" asked Tara. "Okay, give me a minute." and I went off and called Mabel. She said she would call Helen and see how quickly they could get organized. A few minutes later she called back to say they'd be over at about 10 the next morning. I was waiting when Mabel and Helen came over. "The girls are up in the master bedroom. I'm going into the office. Take all the time you need and one of the girls will call me when they're ready for me to come home." I said and went off to the office. I'd been gone for about 2 hours when Tara called to say I could come home. When I got home there was no sign of the girls downstairs. I called and heard an "Up here" from Tara. I went up looking each of the girls' rooms but no sign of them. When I got to the master bedroom I was greeted by two naked girls with wet faces. "Look Daddy" said Ashley as she dove back down to continue eating out her sister. I looked at Tara to see that she was following suit. Finally the girls came in each other's mouth. Once they'd relaxed they started to tell me what had happened. "Now Dad, you remember what you told us about not talking? Well the same rule applies to you." Tara said. Here's the girls' story: Mabel and Helen came into the bedroom and immediately started hugging and kissing the girls. At first they were a bit afraid but soon warmed up to the grandmas' actions. At some unseen gesture, both grandmas stopped, got off the bed and stripped. "I was shocked, Dad." Tara told me. Grandma Mabel took Tara by the hand and led her off to Tara's room. When she got there, Mabel lay Tara on her bed and joined her, playing with her breasts while giving her full tongue kisses. Soon Tara said she could feel Mabel's hand down on her pussy and shortly thereafter she felt a finger on her clit. When Mabel urged Tara to suck on her nipples, Tara complied. Suddenly Tara felt Mabel get up and move to the side of the bed. She reached over and moved Tara so her pussy was right at the edge of the bed and after putting her heels up on the bed, Mabel got down and ate Tara out. "It was the best I've had, Dad." she told me. When Mabel asked Tara to do her, Tara couldn't wait. Finally Mabel and Tara went back into the master bedroom where Helen and Ashley were just cumming. Ashley said that she and Helen had done much the same thing as Mabel and Tara. Once all four were relaxed, the grandmas told them of their history. The grandmas had grown up as neighbours and with no other kids their age nearby, soon became fast friends. Both were quite shy and were afraid to talk to boys or to let them know that they were interested in going out with them. One raining day they were in Mabel's bedroom and started horsing around. Pretty soon, they looked at one another and without saying a word, got up, took off all their clothes and got back on the bed where they started kissing and petting one another. This continued even after they went off to college. In college they met Paul and Harry and soon had sex with their future husbands. In spite of this, the two women got together often and had sex together. Even after marrying they carried on their relationship. To this day, they've not told their husbands and as far as they can tell, their husbands are unaware of their relationship. Tara said that for the rest of the afternoon, Helen and Mabel continued to play with the girls, switching partners from time to time. Towards the end of the day the grandmas told the girls that girl-girl sex was normal between sisters and that they shouldn't be afraid to try it. They then got the girls to go and have sex with each other. "I finally understand why it's called 'sixty-nine'." Tara said with a smile. Once the ladies left the girls phoned me and went back to enjoying one another and waited for me to come home. "We're going to try it again." Ashley told me. I just smiled and nodded. Over the next year things continued with one or both of the girls in bed with me most nights. On some occasions the girls informed me that they were going to have a 'girls only' night and I knew they'd be eating one another out. I continued to fuck Tara but in spite of Ashley's pleading with me to fuck her also, I wouldn't. On night I had to put a stop to the asking. "Sweetheart, you know I promised that I'd do things to you the same as I did with Tara but only once you've reached your thirteenth birthday. I'm not going to bend from that rule. Okay?" I could see that Ashley wasn't happy, but she nodded and from then on I heard no more requests. One day when the girls had told me they were having a 'girls only' night, I got a call from Mabel asking if I could come over after supper. I asked if something was wrong but was told, no, she just wanted to chat with me. I was left wondering what about, but after supper and telling the girls where I was going I headed next door to Mabel's. When I rang the doorbell and walked in I was greeted by both Mabel and Helen. This didn't surprise me as the two ladies frequently visited back and forth. "Hi David," Helen said, "Mabel suggested I come over to as we'll likely both be involved in this." I looked at Mabel and raised my eyebrow in a question. "Have a seat while I get you a coffee. Helen and I need to talk to you." I did as requested and after the coffee was delivered and Mabel had taken her seat again, she started to explain the reason for the 'meeting'.