My best friend and her husband have an on going battle over her not wanting to do (and still refuses to do) something she told him before they were married that she would never do. He brings it up all the time, sulks, pressures, and gives her the silent treatment over it. :glare: That is not a healthy relationship IMO, and certainly not the spirit in which that thing should be done. (I don't know if this is the same situation the OP is in, but it kind of sounded like it.)
I am sorry, I don't have any helpful advice to give you. If its about YOU doing something, YOU should choose, and he should respect you enough to let you make that decision.