Dont know how to get past this..

Recently, I was seeing this guy - I had only really had anything serious with 1 other guy before for 5 years, who cheated and emotionally abused me alot this was ofcourse very aparent to my best friend and flat mate. It was a pretty big deal that for the first time (in nearly 2 years) I was finally starting to like someone again and let them in. I left the country for 2 weeks and came back to be told my best friend and the guy had decided they really liked each other and were now seeing each other. Obviously I was pretty crushed, the sense of betrayal was nothing I have ever felt before. She even told me that the night me and this guy first hooked up - he told her that he wanted to be with her, and she continued to allow him to go with me! i felt so used!! But I genuinely loved this chick (my best friend) and didnt want to let a guy get in the middle of that. So i gave them my blessing, with her telling me she wouldnt have him around the house for awhile... within 2 days he was there drinking outside with her and then sleeping in her room - after sleeping in my room for months. I even let that go. Then the next day, I get a text message, not even the common decency of face to face but a text message from my supposedly best friend that I have to move out of our house - "that she thinks it would be better for everyone". Not only that but her friend then started messaging me having a go at me. Then the guy all in the mix removed me off facebook, i know that sounds petty and I shouldnt even care but it all makes me feel like I have done something wrong? I am so confused. I have never felt so shat on by people I genuinely really cared about in my life. Its been a few weeks now and I still feel heart broken over it all. My old friend still wants to be friends, and I do miss her, but i dont know how we would ever possibly get past this. This is all starting to really screw with me head =( where did i go wrong!? how do i move on? Do i forgive? Is it healthy to remain these peoples friend??

Your friend isn't a friend, she is a loser. You should recognize this as abuse. She lied to you, treated you with disrespect and you accepted it. That is why people take advantage of you, because you let them. If you don't stand up for yourself and diss these people you will always have things like this happen to you. We do grow out of our friends and make new ones....I suggest you ditch these people, and move on.

Holy Cr@p, you need to kick your former best friend to the kerb! She wants to stay friends? Tell her to go f*ck herself.