You might ask him if he wants you to work outside the home or take care of the house and the nephew. He might feel your contribution isn't what he needs. also a man of his age with you as young as you are is likely a bit of a control person. I had a husband that was 6 years older and although he loved me completely, treated me like my input was unimportant on most things as to decisions. I believe I would talk to him in an objective way, and try to keep emotions out of it. Do stand up for yourself and do not be timid about what you want and need to get across.
hugs, bj