~SHORT!~ (tbh, this is more a headcannon rather than a shot)

Peter walked into Stark Tower, clutching the gift bag tight to his chest. "Ayo, Pete!" Hawkeye called from somewhere in the vents. Peter nodded upwards, knowing that wherever the hell Clint was, he'd see it. Peter walked into the lift and told F.R.I.D.A.Y. to head up to the common room. When the lift stopped moving, Peter stepped out and saw only Steve and Nat. "Where's Mr. Stark?" Peter asked, looking at the 2 rogues. Nat glanced up from her book, "In his lab." Peter nodded and made his way down to the lab, where, indeed, Mr. Stark was. "Hey, Mr. Stark," Peter spoke as he walked into the lab. "Hey, kid," Tony responded, turning to face him. Peter gave him the gift bag and clasped his hands in front of him. "Happy Father's day." Tony frowned, "But I'm not a dad." Peter felt his heart sink. "Y-yeah, I know... but... I just thought it would be nice, you know?" Tony raised an eyebrow and had a quick look through, "Kid, I understand what today is, but, I'm not your dad. Can't you make it into a May thing? Seeing as she plays both parts?" Peter swallowed and nodded, tears coming to his eyes. He whipped them away with a sniff, "Yeah... ok... see you Monday." He left before Tony could respond.

~

Tony looked through the gift thing properly when Peter left, wondering why he was crying. Then it hit him. I'm such a fucking idiot. Tony thought to himself. Inside the package was a cup with the date when they met and a picture of them with their arms around each other, a voucher for a beard-pamper day and a homemade coupon for a movie day. A few tears come to Tony's eyes and he whipped them away. He sat there for a while, fingering the cup before coming to a decision. He called a suit and flew straight to Queens...

~

Where he found a sobbing Peter in his bedroom. Tony retracted the suit and climbed through the window and sat on his bed. "Kid, I'm sorry. I didn't think about how much this day meant to you... do-do you really see me as a dad?" Peter looked at him through tear-lidded eyes. "Well... your the only male in the family on this day since uncle Ben died... and... I-uh... I love you?" Peter looked down at the floor at the end of the statement. Tony leaned over and pulled Peter into his arms and they hugged all night.