Didn't there used to be a Mr. Perfect username?
Anyways, some people are more shady than others. It will be very hard to trust them.
For example, I know a person who does a lot of stupid things that upset me but I don't feel betrayed. The lack of trust I have is because of his incompetency.
There is another person who is competent and to my knowledge has not done the foolish things like the other person. However, I don't emotionally trust him because he is manipulative. His stories never add up and I felt things were off. I've come to learn that he isn't a person of integrity and screws over a lot of people including those who are closest to him.