Long distance is not real.  It takes the ups and downs, the body language face-to-face, and the everyday trials-and-tribulations to make a real relationship.  6 months is not really 6 months.  Once a month real contact is what really counts.  Disappearing is one indicator of what makes the relationship not “real.”

As most women would tell, if he tells you what/how he is, then believe him.  Your job is not to support him.  Your job is to love and support yourself first.  It’s up to each of us to be responsible for ourselves first and foremost.  Is he getting help? Therapy? Doing the 12 Step program? Have a sponsor?  First he needs to take responsibility for himself before having others to step up to support him.d

An addict is an addict.  Check out Al-Anon to see how you cannot “help” him.

Guilt is a shitty way of staying with another person, whether as a friend or a lover/girlfriend.

Mark