Most Helpful Girl
I don't know how long ago this was sent, but if it has been a while I really hope it all worked out in the end.
It sounds to me like he is saying you are the cause for him cutting himself. He is putting blame on you saying it's all your fault that I cut this way, when really it's all his actions and should be taking responsibility for himself. When someone is depressed however (which it sounds like he is), they give off at the person closest to them and make them feel unworthy - giving off false accusations that you didn't listen to their needs or that you are ruining their life. He needs professional help, someone who can better deal with this kind of situation. You have a good heart wanting to help him and being there for him but the next thing he'll say if you stay there for too long is "don't leave or I will kill myself." He will be too dependent on you, make you feel guilty, give you abuse.
What you can encourage him to do is exercise, get out the house more often, get plenty of sleep, & socialise. Other than that, there are drugs provided by the doctor that will help lift his mood or a therapist to be seen to.
But no, definitely do not handle this all on your own. It's too much for a 17 year old and especially draining for an empath.
Most Helpful Guy
Having dated a cutter I can tell you that you should make it a deal breaker to date anyone who cuts. He is harming himself to strike at your emotions knowing it'll damage you emotionally. He needs professional help so you need to tell him to get help or that you two are no more.