I was a brat, how do I make it up to him?

Wow. Don't you have a life where you are currently living? ie. A job or school.

Wow, that came off... rude. Yes, I have a full-time job and I go to school part-time. But I have been here seven years, and the past five years I have been wanting to move back. So I'm going to move back, like I said, "whether or not [he and I] work out." Cool?

What stopped you in the past 5 years? You move or don't move that's not my concern, but in your OP it sounded like you were moving for him hence why I asked about your own life, the one you've built for yourself over the for the past 7 years.