<human>: I broke up with my first girlfriend. It devastated her, obviously. It came completely out of the blue for her, which I knew it would. We never really fought, and then I sprung the breakup on her.

My reasoning was that I felt like I didn't love her anymore. I felt—and still feel—fundamentally different about her. I'm not about to go running back and telling her we should get back together; obviously, I know that's painful and stupid for both parties involved, and I don't think it will solve anything in the long run.

Nevertheless, I feel like I rushed into this breakup, and now feel like I made an enormous mistake. I feel devastated and don't know if I'll ever feel the same way about a girl as I felt about my ex.

I don't know. I'm not sure that there's anything that can be said. I just kind of wanted to get this off my chest and let other people offer their opinions. I just needed to write my feelings down.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I thought I was doing the right thing breaking up, and now I'm confused, and think I did it for basically no reason.