The way they kiss your forehead or randomly grab your hand to hold. The times when you get so mad over something silly but dissolve into laughter because they tickle your sides. The way they talk when it's something they're passionate about.
Whether engaged, dating, an anniversary, or just because. These are the things you want to remember. Right. Now.
Twenty years later the pictures that show all the quirks and subtleties you love about your person will be your favorites.