I have been looking everywhere for this fic and created this account in the hopes that this awesome community could help out. I read this maybe a year or two ago, and I thought it was on Fanfiction.net. I believe it was just a oneshot.
Tony gets hurt falling/crashing to the ground during a battle, and goes home to Pepper all quiet. I remember him being admitting he was tired, and maybe feeling like the team would never appreciate him. Pepper is exasperated but takes care of him. I don't know if it was a relationship or just friendship. I could have sworn I bookmarked it but I've gone through them all and searched for weeks with no luck.
Thank you all!