I really want to give my sister's bf a bj. I want all of him! Without my sister or anyone else seeing, I rub or squeeze his cock every chance I get. With his clothes on of course and no one watching. He tries to let on like he is aggravated with me and doesn't like it. I ask why he gets so big and stiff, but he cannot answer. I'm 21 and they are 26. I confess to self-sex. I want to know how to take it further and if the age is a concern. I really like him and don't want him to get in trouble. So I can get him to allow me to give him a bj, he did nothing and I am the only guilty one? I am thinking telling my sis I want to learn before I have a boyfriend and what would she think of using her bf to teach me. Sometimes she is nice and sometimes she freaks on me, so I am testing her first.