Breaking one’s trust would be even harder if that person turned out to be a parent. We assume that what we’re told is the way things are.
I don’t believe anyone consciously sets out to break another person’s trust and that when trust is broken it’s often not because we don’t care. Unfortunately, we all have things that we unconsciously deal with that get in the way of life.
It may also be that we’ve not done something wrong, but other people change the course of our lives and with it the things we’ve worked so hard to build up. Out of embarrassment rather than them tell the truth, they hide what they know is the truth and leave others to pick up the pieces once they’re gone.
That would be a hard pill for anyone to swallow. It doesn’t make what they’ve done right. The only thing we can do is learn to come to terms with what’s been done and work to do the opposite.