Thanks >>27. To be honest, I had been brooding over >>24 's post for a while. I'm glad someone stepped up to say that he was wrong.
My DM e-mailed me yesterday and said that he wants to arrange a gaming night where my ex won't be around, so that I can still be one of "the guys." This is really excellent for me, as I was afraid I'd have to lose all of the friends I made through him. I just have to get my license now.
Things seem to be working out for me, really. I've been having trouble eating, but I'm working on it. I actually slept last night without sleeping pills, too, although it took several hours to do so. I think it won't be long before I'm over this enough that I'm back to normal, even if I'll always have to carry the pain with me.