Complicated love triangle - How would you react if you were me?

I live in a mixed dorm and there is a guy that I really like. I used to hang out with him, his friend and a bunch of people who live also in the dorm. But his friend recently told me that he liked me and I rejected him as kindly as possible. I decided to put some space between us to make things less awkward. But he still wants to hang out with me and act like nothing happened. Also the guy I like knew that his friend liked me but his behavior made me think that he liked me too (like he would always tease me, flirt with me and he even cooked for me once!). I haven’t told him but I’m pretty sure he knows that I like him because he said that he knows what I like about him and that I don’t have as much fun with others as I have with him. That night, we went out with some friends and he started flirting with girls in front of me and left us to go to a strip club. I felt very hurt after that and he tried to talk to me like nothing happened. But I can’t talk or look at him anymore and he seems to be very uncomfortable around me. I thought I should just give them some space because things are already awkward between his friend and I and I don’t want to ruin their friendship. The problem is we all live together and people have noticed that there’s something wrong. What would you do if you were me? I’m sorry it’s long but I don’t know what to do!