Originally Posted by
jada1981 
I'm so sorry to hear about this. I do agree that cheating and drinking are two separate issues, however, often the core behind why people drink, do drugs, go to prostitutes, etc. is for the same reason. They want that "high" they get from acting out and it allows them to forget about their problems/reality for a few minutes. .
This is a good point. The eating disorder stuff, too, may indicate he's coping with life in general in unproductive/unhealthy ways.
Think he'd be amenable to seeing a therapist?