I'm not going to sit here and pretend that I didn't once think about swirving into the akrnasas river when my GF at age 18 for 9 months, not only had sex with someone else, basically got gangbanged, or pretend that i didn't miss school for 2-3 days beucase all i could do is cry when iound out a girl i worshiped basically was fvcking someone else, or the time the girl that brought me here called me just so i can hear her get plowed, for no other reason than she could.
so i'm not going to sit here and act tough like i've never been there before because I have, and I feel your pain brother. It sucks.
So, I'm going to give you some pratcial advice.
1. realize what you did wrong. I learned as I came here, that even the gangbang girl, there was some things i could have done differently to prevent that from happening. I mean it sucks that it happened, but learn from it and make sure it doesn't happen again. girls at that age, are the most ruthless on earth. they are at the epitome of their sexiness, and lack in wisdom not to totally burn bridges.
2. do not ever talk to her again under any circumstanes. delete, block, move if you have to (not really). she is a drug. it's going to take you a certain amount of time to get over her. hearing her voice will do nothing but reset the clock
3. you have to get to the core of hte problem here. The reason it hurts so bad is becuase she IS your life. she is basically all you have going for you and she's gone. so you need to gtsome other **** going for you. look at what she's saying. you have become too attached. you will learn with age. you are smothering this girl with emotions. do not take this information jand say "okay if i do this nad that i can get her back". it's over brah. but remember for next time.
4. get out and talk to other women. it helps fasten the greieve process. as long as she's the only girl you are thinking about she's the only girl you are going to think about. the faster you can start half ass thinking about other girls the quicker you can move on.
yeah, you will end up comparing them to your EX, but you will also be getting out the house, and doing fun things, and while you are doing that, you will be thinking about her. there will come a point in time where you will stop thinking about your ex as much as you are thinking about the girl you are with.
when I found out about the "gangbang girl" i worked at best buy. there was this rather cute girl,. that followed me aroud like a nat for months, and when she found out i broke up with my GF, she made it her mission to do **** with me. she would pick me up from my house and we would go places all the time. damn near every night i wasn't playing basketall "(i played high school ball) or at work we were at the movies, at a friends house. I literary went from contemplating ending it all to over her in less than 3 weeks. a month later i wasn't even taking her phone calls anymore. I was done with her once I started getting out and having fun. this girl was pretty fun to hang around and i eventually started dating her.
lol, she cheated on me too but that's not the point.
best of luck.