when your girlfriend cuts... it feels like you, as the boyfriend, failed them... is he failing you? no... but... damn it's hard to understand from the other side. your woman is with you, but she's destroying herself... you walk around with a scarred woman, and other men, and other women, and especially the boyfriend himself, all wonder... why is the boyfriend letting that happen? what is wrong and deficient with him, that he can't keep his woman together and healthy?
I'm single now. I've cut and burned before, but never with a partner... actually that's why I'm single, so I can reserve the right to self-destruct should I want it.
anyways, yeah, I don't really have any sound advice either way, except that you are in a tough situation pillthrill. but where has the cutting gotten you so far? maybe your sean has a better way, even if it's harder, or more painful (as ironic as that sounds).