Be consistently unreliable and cancel plans at the last minute
Interrupt people and talk over them
Make every conversation about yourself
Dismiss other people’s feelings and opinions
Gossip about friends behind their backs
Break promises and ignore commitments
Be rude, sarcastic, or condescending
Never apologize or take responsibility
Use people only when you need something
Ignore messages and calls for long periods
Criticize others constantly
Refuse to compromise or consider others
Bring up sensitive topics to provoke arguments
Take credit for other people’s ideas or work
Show up late without warning
Be jealous of others’ success and make it obvious
Overshare private information that was told in confidence
Hold grudges and bring up old mistakes repeatedly
Compete with friends instead of supporting them
Make fun of people’s interests, choices, or boundaries