Sneaky Link
Relatedly, there is the "Sneaky Link." Though this may be a mutually agreed-upon arrangement, like "Stashing," it also nods to having a low-key lover that you hook up with in secret. It may not involve anything so illicit as cheating, but, for some reason, you don't want to tell your friends about it. Fair enough, but just wait until you need to vent about them and end up having to recount months' worth of details.
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