Post-credit scene
"Wait you've been married with a kid this entire time?" Steve's voice broke the silence at the table. It was the day after the big attack, and all the Avengers had gathered in the kitchen for breakfast, made by the resident super soldier.
Tony looked up blearily over his coffee mug. He blinked once before making eye contact with Natasha, who was sat across from him nursing her own cup of coffee. She raised her eyebrows at him, her way of telling him he was on his own for this one. He let out a sigh.
"Yes." he said simply, glancing at Steve, who was looking down at his eggs with a strange look of his face. He looked up at the sound of the elevator, before Cap could say anything else. He heard the telltale clicking of heels, followed by fast small footsteps. He let a smile stretch across his face as he stood up, Natasha mirroring his movements.
"Dad!" came a shout from the hallway, and soon a small body was launching towards him. He caught Peter with practiced ease, and spun him around.
"Hey bud!" Tony said, setting him down. Peter gave him a blinding smile, before he caught sight of Natasha behind him.
"Mom!" the small boy shouted again, wrapping her legs in a hug. She smiled down at him before pressing a kiss to his curls. When Peter let go, she knelt down in front of him.
"I missed you, bug. Were you good for Pepper and Happy?" Natasha asked quietly. He watched as Peter started telling his mom a story and he turned to Pepper.
"Was he good?" he asked, before Pepper sent a glare.
"What were you thinking?" she asked quietly, but he could hear the anger in her voice. Tony blinked in surprise.
"I'm thinking you're mad about something?" he said back, watching as her glare deepened.
"You flew a nuke into a wormhole?" Pepper reminded him, her arms crossed, her voice still quiet. Tony glanced towards Peter, making sure he couldn't hear, while swallowing down an uncomfortable feeling in his stomach.
"Yeah can you yell at me later?" Tony asked, quietly, motioning to the kitchen full of Avengers. He watched as Pepper's eyes widened slightly, before she nodded.
"Fine, but you will be hearing about it later. I've got to run, are you good?" she asked then, voice now suddenly gentle. Tony nodded. She gave him a small smile, pressing a kiss to his cheek, before disappearing. Tony turned back to listen to what Peter was telling his mom, ignoring the audience they had for a minute.
"-and then I put salt in his coffee. His face got really red!" Peter said, and he could tell Natasha was fighting to keep the smile off her face.
"Your dad is a terrible influence on you, and you need to leave Happy alone." Natasha said, in a pointed voice he knew was directed at him. Peter knew it too because he let out a giggle and turned to look at Tony.
"Happy loves it." Tony said flippantly, winking at Peter, who giggled again. Natasha rolled her eyes and stood back up.
"I'm going to go help Peter unpack, I'll be back." Natasha said, walking over to him and giving him a kiss on the cheek, before nodding meaningful in the Avengers direction. Tony rolled his eyes again, then nodded. Natasha then gave him a smirk before taking Peter's hand and leading him out of the room.
Tony let out a breath, and walked back to the table, grabbing his now cold coffee and replacing it. He risked a look at the table, and everyone was smiling at him, except for Steve who was staring at him with a hard look on his face.
"You good there Capsicle?" Tony asked, raising his eyebrows. Steve took a moment to realize who he was talking to. He shook his head a bit before speaking.
"Why did you take all of those things I said to you on the helicarrier, if you knew they weren't true? I mean, I said some pretty awful things." Steve said, guilt crossing his face. The other Avengers looked curiously at Tony to see how he would react, except Clint, who was still stuffing his face with breakfast. Tony squinted a bit, and realized it was probably because the archer didn't have his hearing aids in. Tony rolled his eyes in amusement, but he could still feel Steve's eyes on him.
Tony took a sip of his coffee, his gaze fixed on Clint's plate. He worked his jaw for a moment, before looking back at Steve, who was looking at him with an expression that was a mix of guilt and curiosity.
"Tony?" he prompted, voice quiet. Tony let out a sigh, as he saw Natasha and Peter reenter the room quietly. She nodded at him encouragingly, and he nodded.
"I had to." Tony said simply with a shrug. Steve furrowed his brows in confusion and was about to respond, when Tony interrupted him again.
"The fact that you saw me as that type of person, is exactly what I was going for. It's the only way to keep people from finding out. We're good Cap, as long as you keep my family a secret, I won't hold any of your words against you." Tony said, feeling slightly uncomfortable telling these people his greatest secret. But Natasha seemed to trust them, so he hoped it would be okay.
"We wouldn't ever think to do anything but keep it a secret, Tony. That I can promise." Steve said, and Tony nodded.
"Good talk. Now I'm going to go spend time with my kid, and my wife. You guys are welcome to stay as long as you want, just don't eat all the good cereal." Tony said, walking over to his family and walking out of the room.