I'm dealing with an obsessive crush right now, too, and I have decided I need to back off and not act out on my compulsions to check to see if she's texted me or checking her Facebook to see what she's saying. I'm still going to be friends with her, but I need to stop acting out with compulsions. From what I understand, compulsions can encourage obsessions to continue. So if you're not already friends with this guy, I wouldn't have contact with him if you can help it. That's my advice, for what it's worth. I hope your obsession stops!