When I was having a rough relationship with someone who I was with for over a year (maybe one year 8 months? I haven't kept track since I ended it...), I could not stand the overbearing feeling I was getting. Because of that, I ended it gently saying enough was enough. If you don't like the person you're with, jasmine, you have absolutely no reason to stay. Tell him you don't think it was meant to be and go enjoy being single :) it may seem a little lonely sometimes, but rejoice, cause something it's just a heck of a lot less stressful.
Now, to answer your questions...
I didn't break up with that individual because of the fact I was afraid to hurt him. I know that he was being controlling because of the fact he did not want to lose me. In the end, however, it's your happiness above all.
Yes, I did try to work it out. I believe that in a normal relationship, you shouldn't develop an I don't care kind of attitude. It didn't seem to work very well, though. In fact, I believe things went downhill from there.
I hope I could have been help :)