Steve was sitting on the couch in the common space of the Avengers tower. He was reading a book, focusing on the word written on the pages in front of him, and not the redhead with her head in his lap watching a movie on the TV. Neither of them notices his fingers raking their way through her hair, or the way her hand rubbed his kneecap softly, it was the little touches. They've grown to be very physical with each other, but not in a sexual way, in a way that just showed the affection they shared for the other.
Tony walked into the kitchen which had a good view of the living room, the couch in which the pair was on had its back towards Tony. Tony stood at the island in the kitchen filling his cup with Orange Juice. His eyebrow raising as he realized that the TV was scrolling through channels, but Steve's attention was on the book. He cleared his throat softly before taking a sip of his cup making eye contact with Steve as he turned towards the other male.
"What's up?" Steve asked raising an eyebrow, his fingers still combing through Natasha's hair.
"Who's flipping through the channels?" He questioned as he approached the couch, before seeing the flash of red hair as Natasha sat up. His eyes got a little wider. "Sorry Red, didn't see you there."
"It's fine Tony." She laughed it off as Steve went back to the book, and has hand rested on the inside of her thigh. "Wanna watch a movie with me?" She flashed a smile towards Tony.
"I don't have to, don't want to interfere with whatever date situation this is." He laughed softly taking another sip of his Orange Juice.
"Oh no," Captain turned his head from the book to meet eyes with the other male. "We aren't a couple. What makes you think that?"
"Why do I assume you're a couple? I don't know, it might have something to do with the way you're snuggling on the couch right now. Might not"
He shrugged walking away, leaving the partners alone to roll their eyes. Shrugging, they went back to their original state, only after they shared a smile and a slight laugh. Her head falling right back down to his lap, and his hands finding her hair.