Avengers right after a battle- probably a couple of issues before Tony goes on his REALLY bad bender.
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"I'm fine." He actually heard Tony say as Steve gripped tighter onto the armor to keep the man from falling into his own blood and vomit.
Steve felt his jaw clench. Why was he so stubborn? He'd never ask for help.
In a rare moment of ample frustration Steve let Tony go.
Tony's arm went out in reflex but he couldn't support the weight of himself and the suit. His arm buckled and his face landed in the mess.
Steve looked down at the man, crumpled on the concrete. "Say it again Tony." Steve heard himself say in a voice that was angrier then he'd meant it to be.
Tony's look of shock dissolved into one of anger and disgust. He coughed as he set his arm to holding himself upright once more. Steve looked on in sickened disbelief.
His arm shaking, his face slick with stomach acid, and his lips still oozing blood from his internal injuries Tony sat himself up. "I'm fine." He looked at Steve and didn't blink, not even once.
Captain America looked away.
Steve Rogers wanted to cry.