The shift of her hips caused more friction, and instinctively he thrust back, and squeezed and kneaded her bottom. One finger of his hand managed to slide under her knickers, but he drew it out quickly, lest he make her uncomfortable--though as far as they'd gone, there wasn't much more that could be embarrassing at this point. He kept kissing her, tangling tongues and reveling in feeling the warmth of her body against his.