Long story short, about 9 years ago I met this guy on the DC metro. We were chatting, he asked if I wanted to hang out sometime, and since he worked for the Princeton Review (I was studying for the GMAT at the time) I agreed to meet up with him. We met at a bar, had a couple drinks, and ultimately he pops the question: have I ever sucked another guy's cock?  I replied "No."  Then he asked if he could invite some friends to my place to watch porn. I said no again. Finally, he asked if I'd be interested in meeting up with two chicks he knew in town. My curiousity was piqued, stupidly enough, and I said I'd think about it. But it never went anywhere.

Over the next few months he'd call me and ask me to take trips to New York with him or whatnot, and I kept telling him I was busy. I was hoping the guy would finally take a hint. Months went by, I went off to school in Boston, he moved away and I never heard from the guy again.

Until, out of the blue, in 2001, the guy calls up, said he was in town and asks if I wanted to go out. I have no idea how he tracked me down. I was married by this time. Since the guy had a decent personality, and I wasn't getting out much, I decided to give him a second chance and agreed to meet up with him. We went out, he invited me to his hotel room and he popped in a porn video (before that he wanted me to ride around town with him and flash our junk at female passersby.) Then he asked me if I'd mind if he stroked one off while I sat there and watched the video. I told him I had to go. He kept begging me to stay, finally I left. At this point I wanted nothing more to do with the guy.

Afterward, he would send emails, and call me to ask if I wanted to meet this chick he worked with. Again, my curiosity was piqued, and I told him I'd think about it.  Then he wanted me to take a picture of my penis and send it to him, so that he could forward it on to this girl he was telling me about.  I went so far as to take the picture, but never got the nerve to send it.  I'd had children by that point, and I had to look out for them.

Last year I moved to another state. I figured I'd never hear from the guy again. Today my wife tells me that while I was out he called for me. Now I'm starting to think this guys is not only a gay sexual predator but also a psycho. There's a lot more to this story but I tried keeping it to the bare bones to avoid boring anyone. 

Anyone got any advice? I don't want this guy blackmailing me or something.