When I was 15 I was always sexually active because I was going through puberty. Well this one time my sister dropped off her 8 year old daughter for me to babysit over the week end as she goes off doing here partying routine as usual. Well this one time it was just me and her at my house alone. I went into my room to watch some porn leaving her alone in the livingroom. I get out went to the living room with my laptop and she asked me where I went and I said, "I was hiding", and she said, "Alone, with your laptop??". I know...BUUUUSTEEEED! But I didn't really care. I got curious so I showed her some porn videos and I asked her if she wanted to try, and she said yes. So I took off my pants and boxers and I let her hold my penis, and she started to stroke it slowly. Then she started licking it and soon started sucking, and trying to do what she say in the videos. It was an amazing feeling because it had been my first time. My dick is 7 inches and she could only fit her mouth just past my shaft. She started to undress, but I didn't penetrate her, I just started humping her like crazy rubbing my penis against her pussy and between her ass cheeks was amazing, and then cam all over her stomach. After that happened I kind of regret doing it but at the same time, I don't.