Is it just me? Please help....?

Wow...sorry to hear that. I feel pissed off reading that I can imagine how you feel. Well hun as much as you might not want to hear it...I would go back to the UK and be done with her. I wouldn't tell her your leaving, I wouldn't give her anymore money for the flat... I would kind of just disappear. I wouldn't even answer her phone calls or anything. Sounds like you were the adult and now she is off playing "slut" girl. Why go back to "hell"? It's going to get worse and you are always going to have that feeling of knowing that she has done you wrong, which she has. She wants to act all big and bad then I would let her down there alone and see how she deals with it since she thinks she is doing so well. Let her b/f worry about her. I'd be soo mad I wouldn't tell her anything like I mentioned. If she knows you are leaving and she thinks you are coming back let her think that, but DON'T go back to that mess. It's only going to make you more upset. Be glad you were able to get out now and not be in a worse position some time down the line. What she did wasn't very nice. She put a guy before a true friend and that is NEVER acceptable. Let her worry about it and paying for the flat...she's a big girl or so she thinks. Be gone and done honey you don't need her in your life. Go back and start over in UK. Save some money and go wherever makes you happy. Just take it as one of those lessons of life learned. Good luck to you....and PLEASE don't go back to that, you don't need that in your life.....It sounds like you are very smart and have a good head on your shoulders. You don't deserve to be treated like that. I hope everything works out for you...It will! :)