" is he a socio path or a narcissistic or sadist or just selfish"

All of the above.

Seriously, please get rid of this toxic man. He's playing with you, he's cruel. He knows that you've been weakened, because he's done it, and knows he'll get away with any behaviour as he's worn you down, and you now let him. I bet you wouldnt have put up with this had he done it from the start.

Please talk to friends, family, a therapist - get the strength to get out of this relationship. Dont be shocked tho if he comes back if you dump him, promising the earth - it will be part of the game tho, and his ego wont want you to be the one to walk away. Its all part of abuser's games - I've been there.

Stay strong, look after yourself, and find someone who treats you as equal, not a fool.

Hugs