He smiles happily at the gasp - he can feel her body tensing and he loves it. He's sure it won't take too much to push her over the edge at this point.

He makes sure she has a grip on the shower head, because that frees up his hands to make her feel even better. He grasps at the inside of her thighs, making sure her legs are properly spread, before moving up to her hips, her stomach, and finally her breasts, massaging them firmly and timing nipple pinches to her gasps.