<human>: Can you summarize the given text in a few sentences?

Just over a week ago my girlfriend kissed her ex-boyfriend, after a week of us trying to put it aside more and more kept coming out about the relationship until she said that she had no feelings left for me, but she would be sure they could come back. 

Up until this point she has spent the week being very upset about the whole situation, crying at the thought of the relationship ending and telling me i'm the only one for her. We had long term plans together.

However, because she said she had no feelings for me, I ended the relationship, I deleted her and then texted her to ask her a question after I had done it, and found out she is yet again at her ex boyfriends less that 24 hours after the relationship.

This is our first real relationship, we lost our virginity to each other and we done everything together. She was perfect for me, I'm slightly introverted but like to go out on occasion. Finding a girl like this was a very small chance for me, and i'm scared I won't find a girl like her ever again. I'm just not sure how I'm going to get over this. Does anyone have any advice?
<bot>: We had our first real relationship together, it ended and she ran off with her ex boyfriend straight away. Not sure I'll ever find a girl like her again and it makes it hard for me to get over it.