<human>: Can you provide a brief overview of the text?

My girlfriend and I of 1.5 years, started dating at the end of grade 12, and broke up 7 months ago, one month into university. I loved this girl more than absolutely everything, and was devastated when we broke up. She started dating somebody one month after we broke up, the guy was someone she previously knew and she knew he was into her. 

I've been with other girls since, I dated somebody for a brief period of time, but have since broken up. I am still as in love with my ex as I was when we were together, and I feel pretty stupid for it. I don't like feeling this way, I know its not 'healthy' but I can't seem to do anything about it. What should I do?
<bot>: I've dated other girls since, shes dating somebody right now, but i can't get over her and don't know why.