Whats the greatest tangible gift that a woman can give a man to show how much she loves him.?

My bf and i just had a argument and he is a man that has everything. i offer love respect, submission and every beautiful thing a man can desire from a woman. He says what makes him different from any other man i have had before? what sets him apart, and i wasnt quite sure what he meant. He says anyone can express feelings of love but what tangible thing have i given to him that i hadnt given to anyother past relationship i have had? pls give me an input!!! SERIOUS ANSWERS ONLY!!