To know why they are angry/pissed/annoyed? I've always wondered about this, and its something that has annoyed me big time in the past, to the point where it has interfered with the relationship. It would go something like this: The previous night everything was great, she was smily, and happy. The following day she got a attitude, and is mad at me? For what exactly? Im not one of those weak guys, that ask "Why are you mad babe" or "im so sorry" (even though they dont know what they are sorry about). I will just ignore it, and take the opportunity to go out to train or be with friends, in which she will call and spam, and throw a fit. It has become a thing where its something i cannot tolerate, and will tell any future girl about this behaviour. Im a pretty flexible guy, and will overlook, and find excuses for weird/ annoying behaviour, but that one is one i cannot ignore, as it ruins my day.