The elevator doors opened. The three of them were wearing their matching hoodies. The twins got out running and hugged their dad. He kneeled to hug them back. Everyone was there and they all thought the scene was adorable. Steve stood up and saw Nat walk in.
Steve: "Oh, screw this !"
He walked to her, grabbed her by the waist with both of his arms and pulled her in for a passionate kiss. She kissed him back, bringing her hands to his neck and gently playing with his hair. After a few seconds they slowly pulled back, still hugging.
Nat: "That was..."
Steve: "... Necessary."
Wanda: "What the hell was that ?!"
Twins: "Does that mean we can go back to calling you mom ?"
Nat: "Yes, you can."
Bucky: "Wait, you are the mom."
Wanda: "How could I have missed something like that !"
Thor: "Well now that they're hugging each other like this, it feels kinda obvious."
Tony: "Rodgers I thought you said it was best if no one knew who the mother was... I mean, you didn't even tell me !"
Steve knew they would have to give them a lot of explanations but he couldn't just stand there while Nat looked so good with a Captain America's hoodie and do nothing.
Steve moved in Nat's room, there was no point in having two separate rooms now that everyone knew about them. He arranged the furniture in his room to make it fully available for the twins. Now that he slept with Nat, the twins could have their own room.
Tony offered to give one of the twins another room. But they insisted on staying together in their father's old room.