It all started because he couldn't let go of the old me.. even though I've changed. He doesn't believe that some of the time. Cause sometimes little things trigger his emotions.. He broke up with me last night. And I honestly believe that if he can give me a second chance that we can fix things.. I just don't know what to do. I feel like I'm pushing him away, and I don't want to do that. It just hurts so bad to be without him. What can I do to get him back?

Give him space to heal then talk about it

I know this isn't what you want to hear but here goes. He broke up with you and now you give him exactly what he requested... nothing. That means no contact in any way, shape or form. If he comes back which they often do then you can evaluate your feelings. Until then focus on moving forward. I will tell you that if he broke up with you once, chances are he will break up with you again. I've done it to guys before. I broke up with them for legitimate reasons, missed them, got back together and ended up breaking up with them again when the same problems recurred.

here2assist is correct, the pain is even worse when you get back together then lose them again, best be prepared and when there is an opportunity at least you are prepared and have changed for the better