I see what you're saying, but I'd say that what she's doing is kind of like someone luring an alcoholic SO to drink just because she can't stop. Sure, in the end it's the addict's responsibility to quit, as well as it's the addict's own choices that got him addicted from the beginning, however, he's still an addict and if someone he loves and lives with keeps on feeding his addiction (pun intended), I'd definately say that she is has a main responsibility in the potential death of said addict. Edit: I'm a sober drug addict who's left numberous partners for this reason, however i can't say that it's been easy to leave someone I love - I've been having relapses because I didn't want to - though in the end, I've realized it's for the best. I hope this poor man reaches the same conclusion.