<human>: I am trying to move on and cope from a recent breakup.

When we started, she just broke up with her ex. We had made out the week before she did, and I had no idea. Even after finding out and confronting her about it, I was very interested and couldn't let her go.

We dated a month or two after and everything was great. She would tell me I am the best person that she's been with, and that she was in love with me (she was also the first one to say it). Communication was strong and she would always seem happy to be with me, always having conversations about us and our potential future. There were a few guys that she denied and told me about, one being one that constantly hitted on her at work (and a glorified admitted homewrecker). We dated for a good 6 months.

Now the other weekend she came over, and without warning or room to change told me she didn't love me anymore, and wanted to end it. I of course was stunned and threw the 'can we try?' card, and that got shut down.  She left, and a couple of days later, I'm pretty sure she is with that said guy from her workplace. It took a huge hit to my esteem and confidence. Needless to say, I gave her my everything, put the guard down and gave her my self worth. I have been cheated on in the past, but this just feels like a kick to the gut.

I feel like shit. I have so many unanswered questions I want to ask but I don't know if I should, and I still can't shake the feeling that I still love her even though I shouldn't.   I feel like I was a "means to an end". **Reddit, How do you move on with sudden, near unexplained heartbreak?

Summarize the given text in a few sentences.
<bot>: Had a loving relationship, but suddenly without notice says she didn't love me and broke up. I can't move on or stop thinking about her. What should I do to rationalize what happened?