There's no rule

The reason why cheating is such a big deal isthat you'll never trust him again. You couldsee him giving me directions, and I smile, andyou think...uh huh...another one.

He is supposed to be here at seven, he is late,you think...uh huh...he was with another one.

On and on.

If you can stop caring whether or not he's faithful,and take what you get...I don't know the mores of the place you are.I can tell you, in some places, certain sex actsare not 'acceptable'...and a man would not askhis wife to perform them, but can find Monicawho'll be happy so to do.

A number of men don't want to kiss the mouthof a woman who used her mouth on other partsof his body so would rather Monica do that andhe can kiss Hilary.

In some cases once you stop demanding faithfulnessand make the relationship tacitly different, so thatyou don't ask him where he goes, he can't ask you...

so it depends on how you feel, what you can dealwith, what is the bottom line....