I'm sorry that he's not the person you knew - or were waiting for. It's very hard to feel unappreciated and like you have been set aside. I know exactly how you feel, I am still going through a bit of this myself. But a year-long program does seem like it would be very intense, so maybe he is still adjusting to being back in the world. That's still no excuse for him to be a dick to you, of course. It sounds like continuing to watch him from a distance is a good idea right now; keep an eye on him but keep focusing on you!
