Hi,
Sorry if I am being to bold but only" he can get through this." Just him,
but all means be there to support ,, if you really want to. You said "ex" boyfriend, there must have been a good reason. Addicts use everyone. your kindness may become your weakness. They tell people getting out if rehab not to have a relationship for a year clean. a year of being yourself. If he was high while you were with him, then you don't really know him. . Read up, don't get caught "not knowing anything" , you had no" idea " he was using, you did in hindsight.
go to a meeting. Lay out everything on the table, you will find your answer,
good luck
paaddict
You know this, but don't judge and don't try to solve. Just offer support, it really means a lot.