Clint does nothing but gently touch her hole with his finger, and it has Natasha coming. He keeps sucking on her through it, blindly reaching for the lube leftover from when Natasha had fucked him. When he finds it. he kind of makes a mess, but he can't really find fault in himself for that, because he's busy milking Natasha's orgasm.

Now that his hand is covered in lube, he smacks her ass with it, delighting in the way she jumps in surprise. To soothe the act, he sucks on her clit, reaches his other hand up to squeeze her tit before pushing the tip of his finger inside of her.