For as many times as they've laid together, enjoyed and explored each other's bodies, she has not spent that much time (compared to other parts of him) lavishing his lower legs with this much attention. He is trying hard to stay still, keep his feet from squirming against the sheets, but it is difficult. Having her kiss and lick at his legs, fingers massaging his calf muscles, teasing at his knees... he feels oddly vulnerable.

(Perhaps enhanced by his current 'position', held bound as he is, his ability to touch taken away, his sight restricted, his wings pinned beneath his body somewhat - he would struggle to escape! Not that he wants to escape, he definitely does not, nor does he want her to stop doing to him what she is doing. But there is a hint of vulnerability there, he is the prey, laid out for his predator to devour...)

His heart rate increases, but that's arousal, not fear.

"Will help you clean up," he echoes. "Will make sure not to leave any mess, then will help when... when you ask me to feast upon you, would... will try to show you just, just how good you are making me feel," he sucks in a breath as she hits a spot on the inside of his knee that sends a wave of pleasure up his spine. "So, so good."