Characters/Pairing: Clint Barton/Natasha Romanoff
Rating: M, for swearing and sex
Word Count: 17150 (Completed)
Disclaimer: For fun and fun alone. All hail the great and mighty Joss and the venerable Stan Lee.
Warnings: Spoilers for the Avengers movie; not really spoilers, just vague nods at stuff that happened.
Summary: After defeating Loki with the Avengers, Clint and Natasha spend 24 hours in a hotel suite. Together they recover from the trauma inflicted on each of them by Loki. As Clint’s memories return, he relives the various encounters with Natasha that lead them to where they are now, beginning with Agent Barton’s failed mission to kill the Black Widow in Cairo.

This is a very short chapter... 

New York
Present day
19:48

They’re sticky all over. She has whipped cream in her hair. He’s got some on his wrist, and she sucks it off, noisily, then runs her tongue over the fat of his thumb and bites him. Hard. He clenches his teeth and savors it.

She’s sitting astride him with her feet on his shoulders, and he’s stroking the inside of her labia, running his fingers inside her, languid, teasing strokes, until she shoves him back into the pillows with her feet.

“Now, Clint,” she demands. “Now.”

He grips her hips and maneuvers her backward, his penis sliding inside her, and she’s like velvet, warm and ready. He nips her calf; she taps her toe to his forehead. She leans back on his thighs, holds tight to his shins, and begins to swivel her hips, slow figure eights that pull him deeper, so fucking deep. It’s almost surreal now, the way their rhythms meld, the heavy dusk in the room, the shadows and their scent, like blood and baked earth.

He feels it building in him, and she’s right, it’s like blindness. All of the nerves in the base of his cock and the base of his spine spark into fire. Her thumbnails dig into the meat of his calves, but it’s a distant, muffled, indistinct, and—

“God!” He comes in a sudden violent wave and she shifts upright, slamming him further inside, and he’s rigid and breathless and gloriously aching as he empties into her.

He opens his eyes to her smug expression, the Cat who’s drunk all the cream.

He manages a strangled, “Fuck” and she gives him her full and satisfied smile. Then she smacks the curve of his ass and slides into bed beside him.

Port Sa’id
2005
Four days after failed SHIELD Mission
to take down the Black Widow

“My order was to kill you,” he said. “After we were sure you’d taken the command drive.” He found her reflection behind him in the cloudy hotel mirror. “I’m supposed to kill you.”

She nodded. “I know.”