She was my college 'roommate'. = We were 'roommates' in college.
(..) Vonnie was perplexed. Two men were in love with her. One a dynamic and successful powerhouse. The other, a younger man, who clearly adored her. She shared her problem with a roommate, Rosalind, who first came down strongly in marrying Phil Stern, but then wavered that she found Bobby very likable (..)2016 Café Society
(..) I swear, it just that it took me by surprise. It really did. Ah! I guess there's always the risk, if you get involved with a married man. That's what my roommate said. But he just overwhelmed me. He's incredibly alive and... very exciting. Yeah! It's a very imaginative gift, you got. (..)2016 Café Society