ADVICE ME....WHAT SHOULD I DO????

I am a 21 year old college student who is in desperate need of advice. 

I am on a “break” with my boyfriend because our arguments began to become very heated and physical. About two weeks ago, he literally punched me in the face (mouth to be exact) whilst we were arguing. As I said, we have been together for a year, but a few months ago I started to feel tired of all the arguments and we would literally disagree on everything. I’ve tried to end it in the past, but he manipulates me every time. Now that he has been abusive to me, I don’t want to be in a relationship anymore because his anger scares me sometimes. 

We are now only on a break because he has threatened to commit suicide if I ever leave him. I am worried about him because he needs help and he said he doesn’t. I am also worried for the safety of myself. He apologizes and cries almost every day, and this just makes me feel as though I am hurting him more and more. I have made up my mind that I do not want to have him in my life anymore, but I am only on this ‘”break” with him because I am afraid that he does something stupid and it will be all my fault. I have no clue how to end it or what to do about all of this. I am just very tired of all of this. 

On another note, I met some about a month ago and we talk very often, and it is obvious that we like each other. He shows me that he likes me a lot by the things he does and says, but I am worried because he is about 8 years older than me and he does have more experience than me. I don’t want to move too fast either, but what can I do to see if he really does like me or if it is just a plan to get into my pants?