I don't know if you can call it "slang" but for a man seeking exclusively towards married women are called; "Gigolo," or "escort." Those two are paid professionals. Freelancers are commitment-phobes. They don't want the responsibility of a wife, and think a married woman will keep her mouth shut.
To get hitched is slang for to get married.
The slang term is Fish-Wife.
"Sitch" is a slang term that is short for "situation." It is used informally to refer to a particular state of affairs or circumstances.
The slang term is a "beard."
Yenta, someone who meddles in others affairs Putz, jerk Gonif, jerk
An Acteon is an obsolete slang term for a cuckold, a man married to an unfaithful wife.
Joined together. It is also used as a slang term meaning "married."
It is slang for mistress. A women who is in a relationship with a married and/or taken man.
Beauty (pronounced bewdy), grouse or bonza. Any of these can mean that the state of affairs is better than average up to first class.
In Haitian Creole, "swagg" can be translated as "estil" or "fason."
Dogs is slang for feet.Wheels is slang for car.