It's not that I personally don't tolerate it, I just frankly don't understand his behavior.
Women expect a man to show sexual interest, and traditionally it's her choice to say yes or no. At one time the "brakes" were entirely in the woman's hands.
I keep thinking about the woman he dated who was fine with celibacy until marriage, but when all she wanted was a tiny hint she wasn't wasting her time with him while her fertility slipped away like sands through the hourglass, he found he "couldn't help her".
If he doesn't at least ACT like he's dying to have sex with her one day, how is the woman to know he isn't just looking for a mommy instead of a real wife?
I respect his decision not to be promiscuous, but it sound like somewhere along the way it turned into an ego/control thing. He's seeing a woman who only wants to know if HE is the one she should be saving it for, and if they will be married sometime this century, and he can't even help her out with a clue. Not very kind. Or manly, IMO.