lostangel, unfortunately there are many ppl who do not understand about addictions or mental health issues. did the gf mean you should have tried harder to be successful in your attempt? if so that had to hurt badly. i am not a cutter but have read that one feels like cutting will release pent up emotions. to me it doesn't matter if it's an addiction or not. if it's how you describe it and feel the behavior is an addiction for you.
and u're right you did step back but it doesn't mean your 3 years is lost. for me as an alcoholic i stepped back a few times and drank. but i got back up, tried to see where my behavior was not healthy and moved forward in my sobriety. i've been sober quite a long time now but i still remember feeling like i was a loser when i drank again. but looking back won't change the past. today is a new day and focus on it.
i'm glad you posted. we all need support from time to time. i hope today was better for you.