Advice please ( relationship)?

I am 21 years old and i have been with my bf for 7 yrs ( nov 1)... our relationship right now is really bothering me and making me unhappy. usually when we are together we have a good time, he takes me on trips, we have lots of cute names we call each other.. etc. About 2 yrs ago.. i found out he had feelings for another girl. he admitted he had these feelings for her strongly that if she had them back he would have left me. ( it was a stupid situation , she never even knew that he was extermely interstested in her.) To make long story short..i couldnt get over the fact that IF HE had the chance to cheat,, he would have. and In my eyes he did cheat emotionally. Well we stayed togther however, i brought it up CONSTANTLY just until about 8 or 9 months ago i stopped. Even tho i brought it up, we still had many amazing times, he constantly took me out on trips. etc. In july he told me he didnt feel the same ( he says he cant be himself with me, he constantly ignores me,, and he is very mean to me) there were many incidents where hed get severly jealous and he would hit me. Not badly but still... anyway.. i gave him space.. but he never called nor wanted to see me...so i sent him an email to break up. ( i cry alot becuz of him).. when i broke up with him...i started talking to another guy and went out with him for awhile. My boyfriend came back WENT insane apologizing crying,,, etc.. to give him another chance.. that hes sorry for his pride and coldness. ( he has horrible pride issues). So i stayed but i would constanlty fight.. he DID everything to help get me back... from flowers to trips etc. I kept saying i didnt feel the same. One day i said this after about a month of him trying..and he COMPLETELY changed till this day. he tells me he doesnt feel the same.. he seems to be doing alot of things for himself now... gym membership...always out with coworkers..SAY I NEED TO DO THINGS FOR MYSELF. ( i think he was relly hurt when i didnt want him and when he knew i started going out with anothert guy that it hit him that he needs to do things for himself. But he NOW completely making me feel unloved. unneeded and not wanted. I feel horrible... and i keep crying. tell him that weeve been together for so long that we should do all it takes. but for the past 2 months hes been saying I DONT KNOW if i wanna be with i dont know. " i am scared he says that were gonna go back into our old routine of constantly fighting. He strongly feels that he cant be himself around other ppl with me. that i constantly talk about other girls that walk by...constantly accuse him of wanting to cheat. I fear that he wants to becuz we have only been with each other. I dont know what to do. I am trying so much to show him i love him. last night i rented a movie told him to come over and we had an okay time. but its like once i see him my blood boils with anger. I dont know why. him going to the gym boils my blood as well. I am okay if hes with his friends...but when hes alone at the gym or alone at school i feel that if he meets someone im HISTORY. i have done many things for him. for yrs I always thought about him first ..his needs...i just went and brought hiim brekfast to work,,,he had left early and as i coming to his house hes like i ALREADY ate breakfast just keep it...( this is his attitude all the time.) i dont know anything else. what should i do..keep trying or just let it go? thanks