Jenna turned her head to me. With a soft raspy voice that I had never heard from her before, she told me that the movie had made her really hot. She said that she felt really close to me at that moment but also embarrassed about admitting that she was excited. I reached out and took her hand and said, "well I guess I can admit something to you to...you are the most beautiful girl I have ever seen and you are so much better to look at with your clothes on than any of these girls in the movie with their clothes off."
Jenna started to cry. I didn't know why. Were they female tears of joy from my comment or had I stepped over the line. I mean, I really didn't say anything bad.
Jenna told me that she was so touched by my comments. She said that ever since she arrived, she didn't feel like she was visiting her brother, she felt like she was visiting a boyfriend. Then she dropped the bombshell. She asked me if she could touch herself in front of me. I couldn't believe it. On the one hand, it might be the hottest thing to happen in my whole life. On the other hand, it's my sister. I must have only sat there for 5 seconds thinking, but it felt like a year. My cock was stirring in my shorts. I told her that I wanted her to be comfortable to do anything she wanted in front of me.
With that, she repositioned herself, moving slowly and gracefully so that she leaned against the edge of the sofa facing me. She had one leg on the sofa and the other over the edge with her foot flat on the floor. She looked at the TV, which happened to show a scene of a hot girl giving a guy a blowjob. She began to touch her chest over her t-shirt, her eyes never moving from the TV. My cock continued to grow. I sat motionless. I didn't want to do anything to upset this scene. In the same graceful motion, Jenna leaned forward, grabbed her shirt from the bottom and lifted it up over her head. As she leaned back again, her tits were in perfect view. They were even better than I had pictured them. Perfectly round with silver dollar size nipple area. They were bigger than I had thought too. She continued to rub them and pinch her hardening nipples as she watched the movie. Her hips began to move very slightly, almost like a small wave. Her face was more gorgeous than ever. She could no longer hide her excitement, as her breathing was shallow and rhythmic.