I am having to do this in an hour. The guy in question being one of my ex-best friends, and the girl in question being one of my best friends. He has cheated on her multiple times, and she has to be told as she is an absolutely amazing girls, but I feel absolutely sick. It's going to completely break her heart and probably mine in the process. I don't really know why I'm posting this on an internet forum, but I need something to do other than worry. :(