You have every right to doubt someone if your antennae are twitching. You have even more of a right if they've already given you reason to do so. Of course, you don't need to let on that you're feeling this way. Keeping your emotions under wraps will give you the chance to investigate what's going on and come to a solid conclusion. So for now, watch and wait: which just so happens to be on the list of what you do best.