My experience is that they don't "get over it".
Either they deal with the reality that there is another man in the picture-or they don't.
Generally, the situations where a woman "gave in" to wait out the man-the relationship ended up dissolving. Because the guy never did get to that point.
Part of facing a fear and overcoming it-is facing it. That means if they are afraid of the consequences-they have to face it to ever move past it.
Letting them wait it out tends not to work.
it's like trying to learn to swim by avoiding water.
"Love As Thou Wilt"