The reason she did that is because it is still considered adultery even if he is separated. There is no legal separation in SC.

If it goes to court it will depend on the judge-but worst case senario is he will have to pay alimony, may have to pay her attorney fees, and he may get less than 50% of the assets. Adultery typically does not affect child custody.

The good news is that if he is found guilty of adultery-he can be legally divorced from her in 90 days.