That smile, the tip of their noses touching; it's good, it's a reminder of what they are when they're not panting in each other's faces with their hands wrapped around their cocks. They're... them, a force to be reckoned with in the lab and anywhere else; they stuck it to SHIELD and their lies, and they figured out the scepter problem -- a little too late, but still. He slides his fingers up into the Tony's hair and tilts his chin for him, exposing his neck and throat; he swallows thickly, throat bobbing as he picks his words out carefully, concentrating hard through the hand on his cock.

"No." He shakes his head slightly, a quick movement. "No, I want it just like this." To emphasize his point, he wraps his hand tighter around Tony's cock and jerks him off at the same pace Tony's keeping for Bruce, thumb teasing against the head.

Licking over his lips, he goes a step further, and turns his head so he can find Tony's ear. His teeth graze the lobe before he kisses the spot just behind, tongue tracing around the skin. He draws back enough so he can murmur, and the vibration can carry.

"I want to see you come first. I want to watch you."