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It has somehow become a competition. Neither of them was sure how that happened, even if the other Avengers (the traitors) insisted it was completely in character.
Bruce woke Tony up with a minor, completely controlled (even if Jarvis had to open the windows and kick them out of the bedroom) explosion of red and pink foam, followed by Tony making pancakes for breakfast after serving Bruce a series of complicated mathematical tasks to pass the time, all of which resulted in heart-shaped graphs.
They argued about lunch when it turned out both made a reservation and eventually settled on a little place by an antique bookshop which derailed their plans for a good few hours and ended with Tony getting more books than he could carry.
And since lunch was Bruce’s pick, he allowed Tony to have his overly fancy dinner and spoil Bruce silly…
Only to be pleasantly surprised by Tony dragging them back to the Tower where he blindfolded Bruce and made him wait good half an hour before presenting him with an opulent and completely cheesy set-up. The floor was covered in rose petals, candles everywhere, and the table was moved to the window and set for two, allowing them to enjoy the lit-up, snow-covered New York.
And Tony served them home cooked Italian meal and delicious brownies.
“Why didn’t I know you can bake so well? You are now going to be on official brownie duty, at least once a week.”
Tony just smiled, twirling his latte with a spoon and looking uncharacteristically sheepish.
“I don’t bake often. Not enough time, motivation, I’m too distracted or tired. And the past year has been even more hectic than usual, even if it was pretty great hectic. But I wanted to do something special for our first Valentine’s Day together.”
Bruce looked at this man, this beautiful madman who baked brownies just for him and felt warmth and happiness spread through him. He swallowed the last of his brownie and basked in the contentment, not even realizing he was making sound until Tony’s joyous squeak distracted him.
“Brucie!”
He raised an inquiring eyebrow at the exclamation.
“What was that?”
“What was what?”
“Bruce.” Tony’s grin was wild and resembling of a cat that ate the canary. “You purred.”
Oh no. Oh no, Bruce thought, sending Hulk an internal glare, only to be met with a green shrug. Not Hulk. All Banner. Bruce’s eyes were wide as he tried to come up with an explanation.
“It’s a Hulk thing. Apparently, Hulks can purr?”
Tony laughed, clearly delighted.
“Well, not that I don’t believe you but that was definitely not Hulk purring over my brownies right now.”
Tony’s smile was teasing but genuine and Bruce found out he didn’t mind all that much despite the heat colouring his cheeks. Later, after a hot and messy shower, as they laid side by side in their bed, Tony’s fingers cradling through his hair, deep rumbling resonating within his mind from the Hulk, Bruce didn’t feel any shame, rewarding Tony with another contented purr.