<human>: Give me the gist of the text in a nutshell

This girl was my first everything. We met our senior year of high school and dated for a year and a half, before I suddenly stopped feeling what I used to feel before about our relationship. I tried going to therapy and just getting through it but nothing worked and after a few months I had to end the relationship. 

Since then, which was a year ago, my life hasn't improved. I've realized that maybe our breakup wasn't about her, because I've also stopped enjoying most other things in life. Now, I think my decision to break up was clouded by depression. Depression may have made me stop enjoying our time together and also my time with my friends and family. However, the difficulty is in knowing if my depression stemmed FROM my relationship problems or if it CAUSED them. 

My goal now is to see a psychiatrist, hopefully be treated for depression, and be able to get in a healthy state of mind. I'm so afraid that if I'm healthy and want to try again with her, that I'll realize that our problems were real and not just because of depression and that I'll have to break up with her again. Despite our break up, we still talk and she is very important to me, so the idea of having to go through another break up and yet again being the cause of that and hurting her sounds awful. But, I'm afraid that if I don't try at all then maybe I'll have lost out on somebody who was really, really good for me, because she is truly special. 

I hope anybody here might have some experience with this or just general advice to give.
<bot>: Girlfriend and I broke up, maybe because of depression, and I don't know whether to try again or not once I set my mind right.