<human>: I just broke up with my girlfriend that I've been dating for 1 year and a bit and now I'm not so sure whether I made the right decision.

She's the type of girl that you would want to marry and spend the rest of your life with but the reason I broke it off was because I just couldn't do it anymore..  I work 2 jobs, 7 days a week, have a massive amount of debt and also am going university part-time. We don't see each other very often as I barely have any time but she would always go out of her way to spend time with me which I greatly appreciated. 

The reason I broke it ff was because I felt as if I was holding her back as she could of been with someone who truly appreciated her and could spoil her in ways I could never of have. All she asked from me was for me to be committed to the relationship but I couldn't do that, I didn't want to make a promise I possibly can't keep. We didn't have any major fights but when one did come up, I got scared. I just wanted to be single again and just not deal with arguments. 

Just some background info, my previous ex pretty much screwed up my views of relationships. I dated my ex for over 3 years and I gave up so much for her. I lost most of my friends and I was failing classes as I gave up most of my time to see her, which in turn she dumped me for one of my 'friends'. Pretty much explains my commitment issues.

Right now I'm just focusing on fixing my grades in uni, and trying to pay off my debt.
But now I'm not so sure whether I fucked up big time by letting her go...

Can you give me a shortened version of the text?
<bot>: Broke it off with my gf of 1 year, have commitment issues from previous relationship and just trying to focus on good grades/pay off debt.