My sister is that kind of girl that is able to do almost everything to get what she wants, and normally what she wants is money. I found this when I discovered she was giving blowjobs and handjobs to one of our neighbors in exchange for money and some gifts. When I told her I knew about it she said they never had sex, only handjobs and blowjobs, so I asked her if she could do the same with. She said no problem. This was the first time she sucked my cock and she gave me a bit more so I would keep my mouth shut.