What to do with my roommate that I caught getting off to my feet while I was sleeping?

This sounds completely made up and some people might think that I'm trolling but I am 100% telling the truth. A couple of nights ago my friend that I've known for about 4 years, and new roommate had a problem. I actually woke up in the middle of the night and he was at the foot of my bed looking at my feet and getting off to them. I am in NO WAY homosexual and I felt (and feel) completely violated. I confronted him and he had a super nervous breakdown (crying and whatnot) and he confessed that he's been doing the same thing to his other roomates that he had throughout college. Since he's a really good friend of mine I really want to give him another chance but everything is WAY too weird and I don't feel comfortable sleeping in my own room. So, I asked him to leave yesterday and I just don't know if I should give him a second chance or kick him out for good. I know that it is a SUPER serious crime and if I had reported him that night he would of gone to jail for 10-15 years for sexual assault in the 6th degree and be labeled a registered sex offender. What in the world should I do? I just want some sort of advice that is serious and won't land this up on art of trolling or some meme site.