Decisions, decisions!

He wants to get back together. This is the guy who broke my heart and made sure every piece of trust left me. But that was two years ago. I know inside I shouldn't say yes or is it that my guard is making me doubt him and his ability to be trust worthy. I really dont know what I should do. It's a really confusing situation. It really shouldn't be this hard. Either I love him enough to be with him or I dont. I do love him, a lot. But trust is a big factor. I haven't gained all of my trust potential back. I mean he says he'll never do anything to ever hurt me again and he sounds so sincere when doing so but my heart just won't allow me to go down that path.
I wish someone could help me with decision but in the end I'm the only one who has the final say about it.....
So confused =/