Most Helpful Guy
You cannot have any type of relationship with an alcoholic or junkie because their first love isn't you or even their kids. It's their next drink or fix2
Most Helpful Girl
It might help to actually write out a list of pros and cons concerning your ex. I know most other people will just tell you to let go and stop thinking about him (as if it's that easy), but love is blind.
For me, when I was devastated with my ex, actually writing it down helped a lot. It helped to actually see how much of an ass he was. Why he wasn't worth my time+energy, and to see it on paper how much the cons outweighed the pros rather than just having those negative thoughts running through my head 24/7.0