It's been a while so let's talk SteveTony. I have a headcanon that Tony keeps all the post-it notes Steve has left for him in a drawer in his workshop. They say things like "Make sure you take a break!" or "Movie night tonight" or "I made you coffee" and it's really the little things that make Tony very happy AND comfortable because Steve isn't intruding in his space.
It’s been ages, my dear, AGES.
This headcanon is so sweet because Steve know how Tony works and will often do whatever he can to make sure that he’s comfortable. So the idea of post-it notes being left about for him by Steve is awesome and when they get together, they take a slightly different approach. It could be ‘Lunch is in the fridge when you’re hungry,” but then added onto it is, ‘I love you.’
‘Date night’s tonight!’
“You’re special and so important.”
“Remember that you’re gorgeous.”
“You have a heart of gold.”
Small little notes that remind Tony to take care of himself but also remind him of how much of a wonderful person he is and how much Steve’s loves him. The drawer starts getting full within three months because Steve leaves a post-it note for him every single day and he’s the reason why Tony smiles so much, he’s in love with a sap, his sap.