Some things are supposed to be the way they are, dont think too much into this. Man’s job is to go earn, pay the bills and bring food home, your job is to make him the sammich when he gets home i.e. to handle the cooking and housekeeping business. When you try to disturb the natural balance of things, this is when it gets messy. Leave the man cooking a nice meal for you for romantic occasions - learn to appreciate things more.
I didn’t get the bold part. He doesn’t want to be with you anymore but he will still marry you? Thats messed up. If he has told you he doesn’t want to be with you, that should be sufficient for you to understand whether he cares or not. Men normally do not end a relationship, they bring you to the point where you end it instead. Pick up the signals, act appropriately.