Hearing her moan and her not pushing him away let him know that he was still in the clear for now. He slowly moved his head back down towards her breasts and gently squeezed on her ass. He moved one of his hands up her back and found the zipper that held the dress together. Once he found the zipper he toyed with it for a few seconds as a warning/hint as to what would happen. Once he was finished he moved his hand back down to her ass.