To those who love Irondad and Spiderson fanfics,
I found this really nice story in ao3. It’s one of the best Irondad book ever that I would like to share with you guys.
https://archiveofourown.org/works/18991933
by StarPrince_Punk
“I have kids," Clint said. "I know dad behavior when I see it.”
Tony blinked multiple consecutive times, processing the statement. “Excuse me?”
“Tony,” Steve said now, “how long have you had a son? And how come we’ve never known about him?”
“Yeah,” Clint spoke again, “I thought I was the only one with a secret family. Turns out you’ve had one longer than me!”
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Peter gets to spend all summer living in Avengers Tower with Tony. When the Rogue Avengers get pardoned and come back to live at the Tower too, they're confused as to who Peter is. However, once they see how Tony acts around Peter, that confusion goes away, as they know for certain who Peter must be - Tony's secret son.
Tony and Peter decide to make the most of the situation, and play along. They hope they can keep up the act all summer. But they soon learn that they barely have to act at all.