Trying to move on struggles

He ended things with me. He said it was because of the pressure and stuff in our relationship.
I had a few basic hopes for him, like benig there when I needed someone to talk to or understanding my feelings better... he tried sometimes but not as much as I wanted. When those hoeps weren't met, I would get mad at him unintentionally and end up apologizing later. He always told me it wasn't worth the trouble and we never really sorted things out properly-since he didn't want to talk about it, I didn't ralize how badly it was hurting him.
During arguments, he'd say we shoud just break up and move on. But there were also times when everything felt okay again because of sweet moments between us.
In the laast fight, where I think I might have been in the wrong, he finally said all the hurt feelings that had built up over time... and admitted that my actions really affected him deeply too-though his behavior did hurt me a lot as well. But I tried to overlook it.
I'm so attached to him because I tend to get close quickly, especially with people who matter to me. It's really messing with my head now that he's gone-it feels like nothing else matters anymore and all I do is cry and beg for us to try again.But hee's decided not to reconsider his choice-he says he has other things that need his attention more than this.
Does anyone have any advice on how to deal with this situation?