No, and I never would. There are few crimes worse than betraying someone who loves you, adulterers are scum.
1) Adultery isn't a crime in the US
2) Cheating on someone (assuming you aren't married) isn't the definition of adultery
3) ..its having sex out of marriage. So if you aren't married to the parter you are cheating on, you were also committing adultery with them as well.