Ok, I was going to describe my entire situation but then realised that it'd be too hard for anyone to actually understand...

My simple question is this:

Do I follow my mind or my heart?

Essentially I know me and this girl are perfect together. She did something to hurt me, enough for me to tell her nothing could happen between us. However, she is a changed person now (like I said I would explain but it's very long) and I think she only understands now how much she actually likes me.

I know this is a brief and cryptic explanation/question, but if anyone can help it's be great. Thanks