Cold-hearted behavior can manifest in various ways, such as:

1. Lack of Empathy: Showing no concern for the feelings or well-being of others, even in distressing situations.
2. Manipulation: Using others for personal gain without any regard for their feelings or consequences.
3. Betrayal: Turning on friends or loved ones for personal gain or self-interest.
4. Cruelty: Taking pleasure in causing emotional or physical pain to others.
5. Indifference: Displaying a complete lack of interest or concern for the problems or suffering of others.
6. Exploitation: Using someone’s vulnerability or weakness to one’s advantage without any remorse.
7. Deception: Habitually lying or misleading others without remorse.
8. Abandonment: Leaving loved ones or dependents without support or care.
9. Selfishness: Putting one’s own needs and desires above those of others consistently.
10. Rejection: Rejecting or dismissing others’ feelings, needs, or requests callously.

It’s important to note that people may exhibit these behaviors to varying degrees, and sometimes they can change over time. Additionally, understanding the context and motivations behind someone’s actions is crucial before labeling them as cold-hearted.