He releases the pressure of his hands and she leans back slightly, as if he's pulling her with some invisible string. He moves her back just far enough to find her mouth again with his and Hermione wonders how she'd made it to this point in life without having been snogged like this. Her hands run down his arms, tracing over his biceps. One of her knees is taking more weight than the other and she shifts a little on his lap, unconsciously. Malfoy groans again and she realises she's pressing right on top of him.