A boyfriend wants to know? None of his business. Your fiancée or husband wants to know... OK, that's different... within reason.

Do not tell him what he is not entitled to know. Especially as a boyfriend, and particularly I light of the agreement you have with your company.

I don't know how these lines get crossed. Any individual is allowed their privacy! Which includes pretty much everything when it comes to 'owing' anybody an explanation, and particularly a boyfriend.

If he is asking because he doesn't want to feel 'less of a man' by being with a woman who makes more money than he does- that says something as to his character. Or, that says something if he is fishing to see if you can loan him money to fix is car.

That he wants to dangle a carrot under your nose- by first offering what he makes, so you will be more inclined to offer what you make- also speaks to a questionable character in my opinion.

If you want to lose your job, your dignity, and yourself respect, then tell him. If not, tell him to buzz off. And make sure he doesn't have access to any drawers that may contain your pay stubs...