Green’s Dictionary of Slang

of a man, conducting an adulterous relationship.

1984		Partridge DSUE (8th edn) 52/2: late C.19–20.
1995		T. Willocks Bloodstained Kings 207: You were well fucked and far from home.
2007		Right Thinking from the Left Coast 25 July [blog] If the beautiful women are all going to jail for drunkeness and pedophilia, I’d say we’re well fucked and far from home.