promises, integrity and keeping your word

I'm tired of people who can't keep their word. People who say they will behave under certain circumstances and then the circumstance occurs and they behave like jerks. They don't hold up in their self-manifested life. They can't deal with the situation they created, nor are they necessarily honest enough to admit that they can't deal with it. Rare, but it does show up, is the person who is aware that they are reacting in a way that is surprising to them self. I appreciate that level of self-observation and awareness. But more often is the case that you're dealing with someone who is completely unaware that they are reacting/behaving in a way that is different from what they communicated to you.

Or what they committed to you.

Which brings another topic which is sore of late. Commitment. Promises. Keeping your word. Situations change. Contracts must be renegotiated. Needs and wants change.  So why should I be surprised when I'm no longer the confidant? When I know exactly which position I'm in, because I've experienced the other side of it. When I know the reasons you're flaking out, and what you truly mean by your commitment. And I remember all the promises you ever made me, and how you broke them all. Why should this promise, this commitment be any different.

E tu Brutus?