Hermione bites her lower lip again and her eyes flutter shut. She rocks again but she's keeping him deep. He's noticed she likes this, maybe more than feeling the ridge of his cock scrape her walls. Back to potions ingredients, he thinks, letting his hands rest on her hips and closing his eyes. He can tell she's still doing that slight turn, moving the left hip just before the right and he wonders if it's hitting a specific angle for her.