To dream that you or someone else is untrustworthy, indicates feelings that you do not trust yourself in some way. It could be that your inner voice (intuition, inner guidance) is telling you to go in a certain direction and that you are resisting. Regardless of what is going on in the outside world, you need to learn to trust yourself to know what is best for you. Get quiet and still and make some time to really listen for the wisdom coming from your own heart (not your mind and not from fear).