She was my college 'roommate'. = We were 'roommates' in college.
(..) and I know you love her. Why else do you think I'm willing to put up with all this for six months? Why do you think I'm willing to say to my college roommates, "Yes, that's my husband's love child and her mother in our Christmas picture"? Because I am your wife! You always come first with me. (..)2006 TvShow: Desperate Housewives Title: Listen to the Rain on the Roof Season: 3 Episode 1