<human>: Can you succinctly summarize the text in 1-3 sentences?

I was going out with this girl for four months (to the day), but she broke up with me this morning with a text. It was my fault that the relationship went sour, because I was uncomfortable with how fast the relationship was moving so I sort of checked out. For the past few weeks, I had been contemplating breaking up with her, but now that she has broken up with me, I feel sad and I want her back. I know that it is best for both of us to be broken up, so I can't figure out why I'm sad, especially considering that I thought I didn't like her anymore.

I need your help Reddit.
<bot>: I was thinking of breaking up with my girlfriend, she broke up with me first, and now I'm sad and I can't figure out why.