"Are you sure your not related" that was the question going round stark tower at the moment. Were tony stark and peter Parker actually father and son. Their answer "no"

"Seriously. So your telling me there is not one bit of chance you two are related" pietro asked slumping down on the sofa. They both nodded "pretty sure I'd know if I had a kid" tony said downing his 50th cup of coffee for the day "no DNA test?" Thy both looked at each other "peter care to join me in the lab?" Peter sprung up "of course"

"So this was code for 'let's see if we are related' right?" Peter asked jumping in his chair. The genius smiled "yep peter. FRIDAY run a DNA test" the desks both popped out syringes and they spat into them "2 minutes until results" they both sat there waiting. Anxiously. Heart rates beating. Maybe they were father and son. Maybe that's why tony was so overprotective of this kid. Maybe that's why they look like each other. Did tony want to be a dad to peter? Hell yes. That kid was the only thing that made tony smile. Without him he would be lost. Only metaphorically though because he always knows his way around and refuses to ask for directions.

"Test complete" they both sprang up "0% change of blood relations" for some reason both o them felt upset. Peter moved his chair next to tony and sat there with his head on his shoulder "well guess you are just my doppelgänger" tony whispered kissing his hair "and your kid" he chuckled "and my kid"