I really appreciate everyone's concern and advice. You all seem like a very caring and knowledgeable group. I would use the quote thing here but I'm too lazy and there would be too many quotes.
Aesop - I'm aware cutting is dangerous, I used to do it pretty frequently to myself. He disapproves of me doing it for that reason, so it is better that he should cut me instead of myself where at least he can control it.
Oz - While I do not have any other options (I can't imagine going back to live with my aunt and don't have money to be on my own) and wouldn't be allowed to leave anyway, I would NEVER want to leave. I love him too much. As for me willingly giving myself to him as opposed to him taking, I had already given up on life before I met him. Anything he does to me is fine. As cliche as this is, I don't know if I'd be here if it wasn't for him, honestly. I want someone to have control of my life, I don't care if that means I'm weak. I don't think he would push my limits to the point where I could seriously be hurt. He tries to maintain control, but sometimes because of his nature he can lose it. He does apologize (in his own way) later though.
Tojo - I am sorry that is creepy to you lol. Yes, I started when I was 16. I know going with him wasn't the smartest thing to do then, but like I said, it turned out alright. I disagree that I'm on the edge... As I mentioned before, I was at a very low point in life when I met him due to some tragic circumstances. I actually did want to die. Now I have someone who cares about me and would prevent that from ever happening.
submissivewife - I feel very safe with him =)
It's hard to describe everything within one or even a couple messages, but he really is wonderful. I am lucky to be with such a man. I could get all mushy here but I think I'll spare everyone that lol.