One has to believe in a person before you can trust them. You can’t say I believe you, but I don’t trust you. Neither is it right to say that I trusted you, but I don’t believe you. That kind of statement is purely unacceptable.
“Mommy, What were you doing bouncing on daddy’s tummy last night?”
“I have to do that or daddy’s tummy gets very fat!”
“Bouncing keeps him skinny!”
“That’s not going to work.”
“Because Tina the babysitter keeps blowing him back up again.”