Confused

So recently one of my guys friends I've been close to for a while stayed at my house which is completely normal for him , my parents don't mind at all because he is also like a brother to my brother. We had just came back from a nigh out with friends and went back to my house. After I took a shower I went back to where everyone else was which was at about 2am. So I sat on the couch and he comes and sit by and starts to move his hands to my vagina and starts to rub on it... mind you he was on the phone with his girlfriend at the time but she was sleep. My boyfriend which is like a friend of his doesn't know. I don't know if I should tell him because I actually cummed but when he tried to had sex with and kiss on me I told him no "I don't want to do it" and he got so pissed!! What should I do?