By picking his jaw up, and washing her back.

Jaune recovered after several seconds, and then picked up the sponge Pyrrha had been using, and squeezing some body soap onto it. As he worked the soap into the sponge, getting the suds going, he gazed at her back. Her naked skin glistened with moisture, looking almost hypnotic. And then if course, there was her shapely ass. It wasn't as wide as Yang's, but Jaune felt that it had a very nice shape to it.

"You're very beautiful Pyrrha," he said, and she blushed furiously as she looked back at him.

"J-Jaune! I told you not to stare!" she whined. "Just... Just wash my back please..."

"Alright, sorry," he chuckled, and began to scrub her back with the sponge. Pyrrha gasped as her nerves flared up, pleasure shooting up her spine.

'Unh... Why... Why does this feel so good?' she thought as her body jolted from the sensations of Jaune rubbing up and down her back. She planted her hands on the shower wall, leaning back as her face reddened even deeper, shuddering with every scrub.

Jaune smiled as he put a hand on her shoulder to steady her as he kept scrubbing, moving the sponge up to the back of her neck. Her eyes were tightly shut as her nerves mercilessly assaulted her very being with erogenous sensation.