I know exactly what you are talking about. Like a demon or monster has possessed your best friend. You have to forgive them when they come back but do you truely ever forget the way they became? I dont think so. It is usually takes a couple of times of breaking up or big fights and getting back together before it just ends. The person that went on vacations with you who professed that they would aways love you, that they couldn't live without you, that you were your soulmate, made for together-that person could care less, they want a new life that doesn't include you. It is strange, the person you used to lean on when times were down and the one that you told your deepest secrets to is not there. It is painful. When you need them the most they are gone. Yes, i know the feeling. Friends say go find another but it is not the same. it is hard not to feel lonelyness and dispare. Some may say this in codependant-MY wife is not coming back, she is married, she diliked me so badly, or really we broke up and had these get back togethers so many times that she married someone just because she knew that we would get back together again and she didn't want to go through it again. It was to hurtful for her. She barely knew the guy but she would rather give up our fighting and getting back, our life then give it one more chance. I know what if feels like to have someone else under the skin of the one you love. Someone that you just look at and say how can you be saying these things and doing this me. I am suppose to be the one that you love, the father of your kids, your support, and they turn to someone else. Yes, that is what is so hard for the LBer. It truely is sad because I believe that most LBers would change and want to do what is right if they would just give the chance. I am sorry that you are going through this because I know the feelings that you have and sweety it is not good.