Ctionally harmful—could be a sign that they are not good for you. Trust your gut feeling and distance yourself from people who make you feel this way. It's important to prioritize your mental and emotional well being above all else. 4. They show inconsistent behavior. Pay attention to how someone behaves in different situations. If their actions and words don't align, that could be a red flag. Malicious individuals may act charming and friendly one moment, then turn cold and distant the next....