My girlfriend self harms?

Don't threaten her like the previous answerer suggested, from experience it will lead her to guilt over harming the relationship and she may harm more and sink deeper into depression. Also self harm just isn't that easy to stop, and it will hurt you more if you threaten her and then she cuts, it is not your fault she cuts, and it is not hers, she will not be able to stop just like that.

It seems like you're one of the rare good guys, especially for your age, that is willing to stick by her, love her and try to help her. Sit her down when you know you have time and won't be interrupted and tell her that you've noticed the cuts and scars on her arms, that you're worried about her. Tell her it won't change how you feel about her but that you want to be able to help her, you won't tell anyone else. Ask her what makes her feel like she needs to do that and if there's anything you can do to help. Let her know that if anything bad is happening to her you want to help her get out of that situation. If she's not ready to talk just let her know that you love her and that you will be there if she does want to talk. Good luck

I'm recovering from sh myself and I am also 16 and what I would do myself is sit her down just the two of you and tell her what you have noticed and exspain your concerns don't fores it out of her it will only make it worse but let her know when she's ready you will be there for her and she will come round in her own time when she is ready to talk bit at the time being she probuly just wonts to know some one cares.

Before i say anything, i would just like to tell you that you are a great boy friend! You really care, and you are not like those scums that just use the girls.

I think you should really try to ask a lot of questions, try to figure out whats up. Tell her that she can trust you, and let her know that you care.

Thanks!

Okay. sit her down. Be like, i love you. [if you mean it] &; be like I do wanna be with you. But i want you to be open to me, about everything and anything. &; give her a meaning ful hug, and be like, do you hurt yourself? and tell her youre there for her no mtter what. & if she needs to do it, tell her to call/text you whatever

You just need to keep talking to her and try and get her to stop

I would say to her flat out "If you keep cutting yourself like that, I'm breaking up with you. That's just weird." Maybe she'll stop.