It is still a crime to commit adultery in Maryland. It is also difficult to get a divorce in Maryland; you need grounds and it takes about 2 years to accomplished fact. So if you are tarrying with friends of the opposite sex while you wait for your divorce, you may commit the crime of adultery.
All of which raised in my mind the question that if the State would define Marriage and the State would define Adultery, then how does the State define liaisons between people of the same sex?
I mean, if you had a same-sex marriage foundering on the rocks of discord, and the principals had a dalliance here and there, would that be adultery?
If so. the State would not only have re-defined marriage but also have re-defined adultery from ancient prescriptions of many years ago.