She really was trying to behave herself. Feeling him press against her thigh only made her crave the sensation more though. She moved her hips just to bring the friction, hands slipping down to his bum as if to hold him in place.
There wasn't a whole lot of control when he was around. Parvati wished she had more self-control. When she wanted things badly enough she wasn't one to go pretending it was any other way though. How could she not want him when he was kissing her skin like that?