Learning new things every day about the person you're in love with is part of the adventure, even if it feels like there couldn't possibly be anything else left in the icebreaker and "fun fact" vault.
So, when a Reddit user asked married people of the internet, "What did you not find out about your significant other until AFTER you got married?" people were quick to reveal the secrets they uncovered only after they said "I do."
I didn't realize until after we lived together that she can't keep the bathroom floor dry. When she showers, I feel as though half of the time she points the shower head at the ground outside the shower. When she gets out, I imagine her shaking her body off in canine fashion. If she washes her face at the sink, I visualize her saying "one handful of water for me, one handful for you" (to the floor) - SeldonsHari