Background: So I'm 18. Had been talking to a girl since sophomore year if I remember correctly. Towards the end of junior year, I lose interest in her (start to not like her, give her less attntion, basically stop messaging her entirely). Find out over the summer her and my best friend had a thing while I liked her and they fucked. I don't hold anything against my friend. I was the beta being used for attention and he was the alpha. So I used that event to better how I approach women and such. It's been about a year and a half and part of me still misses her. It's normally suppressed when I'm productive (working out, making music, etc.) But on slow days I'll have the creeping urge to check her Instagram or I'll remember the times me and her hung out and idk what to do. Is this something natural that'll go away or should I do/change something I normally do to combat these urges?