Selling Sunset co-stars Mary Fitzgerald and Christine Quinn's friendship seems to have reached its breaking point. The two real estate agents for The Oppenheim Group were close friends during the show's premiere season back in 2019, but things have since soured. Christine's antics in the past have notably rubbed cast members the wrong way, and she and Mary have been at the center of various feuds throughout the show.
Mary and Christine were two of the most popular agents on the show during its
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