Straight roommate is hot and touchy....

I live with a few roommates at university. There is one particular I am really good friends with but really have never brought up that I am gay.... For some reason he is just a super touchy person will just randomly grab my arm or shoulder or pat me on the back or hit me in the leg or something.... I don't think hes gay at least hes never said anything doesn't act stereo typically gay at l east... Its really awkward given that he is really hot... Do you think hed just get super awkward now if I tol d him I was gay...