Of course he'd fully expected that she was about to sit on his face; he'd made no move to take control even once she'd demanded to come against his tongue. He knew what she meant, he knew how she wanted him. But still, her desperate need and eagerness for him did take his breath away. He barely had time to get his head around what was happening before she was on him.
His mouth opened for her automatically, before she had even taken hold of his hair. He wanted her on his tongue as much as she did. He gave a muffled moan against her, and his hands lifted to hold onto her hips as if there was any way she needed to be held in place by him. Almost instantly, his lips and tongue moved firmly and confidently against her, kissing and licking and eagerly lapping her up like he just couldn't get enough of her. He could feel her dripping down his chin. He would keep going until she told him to stop, and then he'd fucking thank her for letting him do it. He worshipped her, and he was going to use his mouth to show her how much.