The key to any healthy marriage is communication. But there are certain things that are better when not communicated about. These "elephants in the room" exist in every marriage or relationship. And although they can be harmful, i.e. a spouse's infidelity, they can also be a relatively harmless issue, personality trait, or event that both partners have an unsaid agreement to never discuss.
Someone asked married people of Reddit: "what is the harmless elephant in the room that won't affect your relationship but you never speak of?"
Hopefully their partners aren't also on Reddit.
1.) From drjankowska:
He never finished his coffee, so there's always a half drunk coffee on the table. Sometimes a few if he hasn't put the mugs in the kitchen. I've asked him why, and he says it's because it gets cold too fast. Tried smaller coffees. Still does it.