He's spotted and she's not upset.

Dee is masturbating.
He freezes.

She still hasn't seen him.

He needs to get out of here.
He tries to back out.

As he does so, he bumps into a container on the sink and it lands on the ground.

Dee hears this and sees him.

"Honey...what are you doing here?"
"I...heard the shower. I thought I left it running."
"Oh...I see. That makes sense."
"I should go."
"No, wait," Dee says, reaching out to him.

"No need to be shy. I'm not embarrassed. You shouldn't be."
"It's just...you were..."
"Masturbating. Yes, it is a natural thing to do. You do it too, I'm sure."
"...um, yeah."
"Well, in that case..."