I think that you need to take the lead in this situation. If he wants to talk then it needs to be on your terms. I dont think that hes going to come back to the states to ask for a D.
He has made some really bad choices, so if you are kind enough to be willing to talk to him, you need to say when and where. All he is allowed to do is ask you for the talk.
Jstar is spot on about what she said. Right now, you should be worrying about yourself. This is an opportunity for you to make some real changes! You have got to stop worrying about him. If you can take your focus off of him, you will feel better, I promise!
I guess I gave the wrong finger to the wrong man...