I promise you bud that you'll be surprised at how quickly these feelings can pass. Just remind yourself that it is temporary and that things could be MUCH, MUCH, worse! When I look back on my posts from here and entries in my journal from as recent as October/November, I am amazed at where I am now. I made it to a GREAT spot all alone, not relationship for a crutch. I can honestly say that I am very happy that I went through all of the crap over the last year because I know that it needed to happen and that it made me a stronger person.
As for imagining the fun she has in her life... Just bide your time brother. All she is doing is putting off "paying the piper", of that I am certain. Find solace in the fact that you are grieving as you should, feeling the pain that you should, and getting it all behind you. You'll be in a better and "funner" place than her soon, and you'll be in the proper "shape" to stay there long term!
