'Melt' was probably a good word for it. The second Lindsey's mouth touched her neck, Phaedra's eyes shut again, and something on the verge of a moan escaped her lips. It might've had something to do with what she was, how good this felt to her. It could've just been that Lindsey was very good at what he was doing.
Phaedra grabbed his hair and tangled her hand in it, other hand trying with minimal success to get his shirt to move in the off direction.