Originally Posted by
Sleeplessinstl 
Any input or advice on how to deal with this and help me get over the pain of losing him.. again would be appreciated.
Time is probably the only way to deal with the pain of losing a boyfriend. It will ease as you move on. Staying with him will only prolong the pain--the pain of living with an addict and the later pain of having him choose heroin over you.
Accept the current pain of him being out of your life. You'll get over it sooner.