Why can't I get the guy I lost my virginity to off of my mind?

I lost my virginity 3 years ago and this guy and I don't talk anymore but I can't seem to ever forget about him. I liked the chase the rush of never know what he was feeling. I'm in a committed relationship now with a guy of 2 years but I still keep wondering what this guy is up to.

Why can't I get the guy I lost my virginity to off of my mind?
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