ALSO i'm looking through my wip folder and i have an outline for a fic that's basically like that headcanon you wrote on nat's post like steve comes home and the team is decorating this GIGANTIC christmas tree except tony isn't there and steve finds him in his workshop and asks tony what's up bc it was OBVIOUSLY tony who had thought to buy such a giant tree and deck out the entire mansion in gaudy decorations and tony just quietly admits that he wanted honestly wanted to join them all but (cont)
but it's still a painful reminder of what he DIDN'T have as a kid, so he ended up leaving after only a few minutes bc he didn't want to ruin the holiday for everyone else, and steve understands and just pulls tony over to the couch and wraps his arms around him and they watch christmas movies for the rest of the night just the two of them, and it becomes a thing because steve can read tony like a book and knows exactly when things start to get overwhelming for tony so he helps tony thru it
o m god the Softe Xmas Stevetones Aesthetic™ cuddles and silence basking in each others presence somtimes steve will tell tony about his christmases with his mom and bucky aaaaaaaaaaaaa