How to deal with somone you were not offically dating
To inject a personal anecdote, after my father died, my mother began seeing, and eventually living with, another man.They had intended to get married, but things got in the way (planning my sister's marriage, then illnesses) and they eventually decided it wasn't really necessary.
(I know - it's my own answer, and I'm putting it down...) A boyfriend/girlfriend who are "living in sin" can use this term to refer to their arrangement, but it leaves their actual sleeping arrangements ambiguous. They could use this term when talking to their parents, to avoid unpleasantness! That is, a partnership for all intents and purposes but not a marriage by law.Of course had the government chosen POSSSQ (person of the opposite sex sharing sleeping quarters), then the distinction might be useful.I really will have to fire off an email to the Census Bureau...Also, when dealing with a business, ask what their "returns and exchanges" policy is.They might let you change your mind to keep you as a customer.