Crew Wife
A girl who marries a member of your crew. Her loyalty resides with the members of the crew, above all other female affiliations.
Moostie and Greasy are a crew. Moostie marry's Blondie; Greasy dates Roxy. Blondie becomes friends with Roxy. Greasy and Roxy break up - Blondie is no longer friends with Roxy, because she is a Crew Wife.