SUBREDDIT: r/relationships
TITLE: Me [20 M] with my ex [20 F] of 10 months. We broke up 2 months ago and now shes partying and having sex with other guys, but she wouldn't do that with me.
POST: So I broke up with my gf of 10 months about 2 months ago and recently found out through a mutual friend that shes drinking, partying and sleeping with guys. I know its non of my business but I can help but to feel like crap because she wouldn't drink with me (she actually hated it, and we almost broke up because i did drink) and she also wouldn't have sex with me, which was fine. But now shes sleeping with random guys and it just kinda hurts you know? How can I get over this, realize its none of my business, and move on with my life?
TL;DR: 
We broke up 2 months ago and now shes partying and having sex with other guys, but she wouldn't do that with me.