I regularly serve (as today) as medical guardian for partners undergoing procedures (when one has partners of a certain age, one winds up going to a lot of colonoscopies, for example.) Usually, there is an assumption, often expressed, that I am their husband. (“We’ll call your husband when you’re in the recovery room.”) Preop seems a poor time to get into a disquisition to the contrary, and we didn’t bring the Basic Polyamory Flannel Board, so everyone nods and rolls along.