My honest opinion is this man is too old for you being that he is more than twenty years older than you. And he is still living with his mother? He is still tied to his mother's apron strings and some men simply never let go. Seriously, you are going to grow and change a lot in these next few years, 23 is still very young yet. You will still be young and will end up with an old guy and a very old lady. And if you have children, ugh, you will be trapped when instead you should have your own space to grow and not be competing with your husband's mother.

Walk away and live your twenties, you never get another chance and these are important years.