I am 22(gay) and there is a guy I know who is gay. We made out one night in a bathroom and had sex. I thought it was only a romp but the guy came back for more. He just can't get enough. How can I tell him how I feel?

 

You managed to communicate (body language) to him that you wanted to have sex with him in a bathroom, which is very difficult to do, but now you can't tell him how you feel? It is not as difficult as you think.  Actually it is very simple.  Just be honest and tell him how you feel.  He may react in different ways, but at least you were honest ad that's what counts.