No No Never MrSunday. You must never have had the displeasure of knowing a true sociopath or you would not be advising angelcat to stick around and try to help him with effort and understanding.
He will never change and any promises he makes to get therapy, etc. are lies and are only used to keep his latest victim around. When he thinks his lies are being believed that gives him the satisfaction that he can fool all the people all the time. They are con men and they know it but they will lie about that too.
They don't care if someone's feelings are hurt because they do not have normal human emotions. Once they know they have power over you they gotcha! Then they control your mind, body, money, whatever you got. If you keep giving, they will keep taking until there is nothing left. Then they move on to someone else and repeat the same old con. They usually cheat on you. Then they laugh at you.
What normal person would be jealous of a cat who needs medical attention? This guy is a person you run from while you still have the strength otherwise, in a short while, angel cat will think she is losing her mind wondering what more she could do to make him happy. He will drain her energy and mess with her mind. Leaving guys like this can be dangerous and must be done without him knowing beforehand. Get away and never go back.
You might think I am being overdramatic but ... ponder this. I lived with a creature such as this and got out, but 10 years later, I had to appear in court in Toronto because this monster had beaten his live-in girlfriend to death with a baseball bat (and with another girlfriend present) and pleaded not guilty! In fact, his legal aid lawyer implied that I might have murdered the gf out of jealousy. Well, the jury of his peers (lol) saw right through his lies and found him guilty and sent this coward off to prison for 13 years. It seems his dead girlfriend had upset him when she and the other girlfriend got into a catfight and ruined the ending of the video he was watching causing him to go into a major rage and he killed her. Rewinding the video might have been better but he knew he could always lie his way out of everything because he thought he was a genius amongst a world of morons.
The worst case scenario but IT HAPPENS.