Eyes glued to his hand, she watched him move to the end of the bed. "You should see yourself too - god, your mouth." She couldn't keep her eyes in one place. His lips were slightly parted and flushed due to arousal, his chest was heaving which made his muscles flex, and she couldn't help but watch his perfect fingers gripping himself.
It was all too much, and she used another finger, bucking her hips off the bed and shuddering as she came. The bathtub plus watching him had already had her reeling, and her fingers knew just what to do.