<human>: Lately things have been pretty shitty for me. Why should you care? You shouldn't. My problems pale in comparison to actual hardships. But if you happen to read this at all, thank you.  

About two weeks ago I broke up with my girlfriend of two and a half years. I know it was the right decision, but it hurts nonetheless. This is actually the fourth time I've broken up with her, the past three breakups resulted in me begging for her back. It's not something I'm proud of. Anyway, when we got back together for the third time, she told me that if I ended things again there would be no turning back. That's where I am now.  
Obviously it wasn't right of me to put her through that again and again, and trust me I feel terrible for it. I know she's had it way worse than me over the course of our relationship, and that just eats me up inside. Why did I have to be so fucking selfish? I couldn't realize that begging for her back was a bad decision *before* I hurt her even more than I already had? She loved me so much and I was so apathetic. I deserve this heartache, but god damn does it hurt. I have to keep reminding myself that this is for the best, because I can't get her out of my head. I don't know what to do with myself.  
The worst part of all of this, though, is that I think she's gotten back in touch with a guy that has used her for sex in the past. I know it's none of my business, but I'm so fucking worried about her. She deserves better than some "ladiesman" that only sees her as sexual conquest. I understand her trying to move on, I just wish he didn't have anything to do with it.  
As I said before, there's no turning back. I made my bed, and now I've got to sleep in it. I just wish my heart wasn't such an indecisive ne'er-do-well and that I'd realized sooner that our relationship wasn't going to work, no matter how much I missed her after being apart for a few weeks.

Can you condense the text into a few key points?
<bot>: Broke up with my girlfriend for the final time. Got what I deserve. Past two and a half years now serve as a vast bank of melancholy memories. Growing apart is a painful process for all involved.