A coffeepot, a vintage typewriter, a guitar and a necklace are among the items displayed on plinths on the stage. When McGee reveals more intimate information about each relationship, we raise or lower our valuations accordingly.
Working with mathematician Melanie Phillips, she established a dizzyingly complex formula that is outlined in the show. Part of the formula, the “relationship index”, measures her time with each ex on a scale of one to 10, including “how hard they made you laugh, the ratio of fun-to-misery and how good the sex was”.