But you need him so as to contemplate continually your heroic fidelity and to reproach him for infidelity.
The jealous man can forgive extraordinarily quickly (though, of course, after a violent scene), and he is able to forgive infidelity almost conclusively proved, the very kisses and embraces he has seen, if only he can somehow be convinced that it has all been "for the last time," and that his rival will vanish from that day forward, will depart to the ends of the earth, or that he himself will carry her away somewhere, where that dreaded rival will not get near her.
There are no more uses of "infidelity" in the book.
Show samples from other sources
The candidate was accused of marital infidelity.
I forgive his infidelity which I have reason to believe he also regrets...