Its like an actual heroin shot vs. methadone. I think posting here is better than contacting one's ex.
Wakeup: its true, its not the same as getting off the needle cold, but not everyone has the strength for cold turkey. In fact, not sure if you are aware but there seems to be 3 types of personalities (at least in mice, LOL) regarding addiction: those who just don't get addicted, those who do but can stop, and those who have a very hard time stopping once addicted. The latter seem just to need to avoid the temptation in the first place.
I've always thought people weren't too different from mice.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh