Sounds like a you problem.

Them breaking contact with you was the best thing that happened to you bro. I've been in a similar situation and I can tell you that you can definitely only go up from here. Killing yourself over some dumb bitch who doesn't know what she wants and a backstabbing bitchboy of a friend would be a greater loss than any one of their lives.

Keep moving forward and know that you're not alone. Many people have gone through this in one way or another and I can tell you that you will get through this.