"Sure, why not?"

I agreed to help and followed my cousin up to her room, where I sat down on her bed while she closed the door.

"So," I asked. "What's that math problem you need help with?"

Anne sat down on her chair and answered: "Well, it's, uhm, the equation male plus female." She let out a little awkward laugh and looked at me shyly.

"You know what I mean....sex. I've never done anything beyond a handjob for my ex-boyfriend and all my friends already went all the way. They were mocking me with it and I got annoyed, so I made a bet with them. I bet that I would have sex by the time I turned 18 and at the little party on the weekend I have to tell them about my first time."

"Oh man, why would you do that?"

"I'm sorry, I don't know, I just wanted them to stop mocking me." Anne looked at me with sad eyes. "So, will you help me?"

"But, why me? You are a beautiful girl, there has to be tons of guys willing to do almost everything with you."

"I....I can trust you. We were always close and I've always liked you and I just think you would be...." She blushed. "....gentle."

My cousin was one of the best looking girls I knew and to be honest I've fantasized about seeing her naked more than once, but she was still family. Fooling around is all fun but actually going that far, having sex? I wasn't sure I could do it. Although, seeing her like this and hearing her talk about this made my dick already semi hard and this was an opportunity that would never come back around.