I had to step away about ten times before deciding to respond.
If you really want to be his friend, encourage his recovery and sobriety but don't be an enabler and stay out of his private life. Regardless of what he's said, you only have half the story and it comes from an addict. Do yourself a big favor and read the sticky called What Addicts Do.
His counselors and group can help him tackle his personal and private issues. If he brings it up, you might want to suggest he talks to them because you're out of your league.