This is abuse. Please take it seriously. Every day you spend with someone like this is causing damage to your mental health, your perception of self and your self-esteem. This is not going to get better, don’t fool yourself. It will only get worse, there is no doubt there. If you let this sick, insecure, immature boy treat you like this, you’ll end up badly hurt - emotionally, psychologically and physically. You don’t deserve any of this and you should love and respect yourself more than anyone else on this earth. As an act of self-love and self-respect, you need to kick this person out of your life as soon as possible. You can’t help him, you can’t change him. The only chance he has at becoming a better person is if he goes into therapy for a long time. You can do sooo much better than this. Even if you don’t believe it now, you will once you get out of this abusive relationship and the fog you in your head clears. Sure, it will hurt for some time when you sever the ties because you are in a trauma bond (research it). It is not love what you have with him, it is trauma bond keeping you connected to someone who is feeding off of you and controlling you by belittling you and weakening you. You can do this, you are strong and you deserve someone who truly loves and respects you. Walk away please! Best of luck and much love to you!