U know when they start giving excuses to u by detecting the signs. It usually involves a 3rd party that they thought was important enough to break that promise with u.
To these jerks; yeah; jerks; they have no idea that the closer our relationship then the heavier the burden of a promise. To be honest; the person who actually took time to believe in that promise is basically because of love and trust. I'm not just taking about the romance type of believe. It could happen between good friends.
If u were to break that promise on the belief that v would always forgive you because of that relationship...u are really nothing but a jerk.
The great trust involved in believing in ur promise is about the believer taking a chance and a bet. V usually put 99.9% on it because there was reliance. We think of u as someone worthy of our trust. We have confidence that u are the sort of noble person v believe u are. Don't you think that when u break promises that u have said to keep is as low as anyone could go?
It may seem very little to you but it means a great deal to ur relationship. The bridge of trust built over the years through communication and understanding was typically ruined because of that broken promise. U could be a good friend, a boyfriend, a husband or whomsoever that may have a relevance to this issue and the point is, u've just managed to lower down the chance of the person ever putting that much confidence in u again.
Yes, u could always get another friend, another girl or boy or even another partner...but this tendency of breaking promises on the belief that u'll be forgiven or that u could get into another relationship of trust will stick to you like an odour. It won't go away.
Never break ur promises unless u really couldn't help doing so or that the circumstances really did not allow u the luxury of keeping them. The trust broken might seem very little to u but it means a great deal to the rest of us that relied on it.