<human>: Summarize the given text in a few sentences.

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?
<bot>: We broke up 2 months ago and now shes partying and having sex with other guys, but she wouldn't do that with me.