They Make You Feel Sorry For Them
A psychopath will do whatever they can to make you feel bad for them. They may come up with a dark and terrible past, and share their troubles about how they were abused, from a broken home, weren’t loved as a child, has a psycho ex, or a terminal illness. They will always play the victim, and say things like “I don’t feel good about myself” or “people always leave me”. Their aim is to get you to sympathize and feel sorry for them. The reason they do this is to manipulate you in not leaving them despite their treatment and behavior towards you. This is a trap that most people fall into, however your own mental and physical health should be taking number one priority at all times. You shouldn't try and help someone who is only tearing you down.