<human>: I dated this girl for 2 years in high school and college but the distance got to us and we ended up breaking up about a year ago. We have talked occasionally since then and are pretty friendly with each other but I'd really like to start talking to her/hanging out with her more regularly. I knew I made a mistake breaking up with her pretty soon after I did but never reconciled. I still think I made a mistake and haven't been able to get her or our relationship off my mind for a couple months now. We had a great relationship and were great together and I guess I just miss her and that. 

I'm not sure whether to text her/call her and just say hey in a friendly way or tell her what is on my mind and that I miss her and everything. 

This is my first time posting anything like this so if I forgot anything please cut me some slack, I'll answer any questions you have.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Want to text ex-gf of 2 years that I broke up with a year ago because of distance and reasons that I now realize are meaningless but not sure what to say or how to approach it.