You go with knocking

"Uhmm, Rachel...?" You try, knocking gently on the door, even as you know you shouldn't interrupt her right now. At the other hand - you try and tell yourself - perhaps a little company is exactly what your lover would need right now, after all. "Rachel?"

"What...?" She replies with a slight gasp from inside, quickly turning off the water to be able and hear you. "What is it, John...?"

"I'm really sorry, but could I just borrow the toilet for a moment?" You wonder, and can sense her hesitation as she doesn't say something immediately. "I promise I'll be quick, and not be peeking at you...!"

"W-what about the toilet downstairs...?" She queries in return, pointing out what a bad excuse you've come up with, but then surprises you by accepting anyways. "Oh, fine then...! But wait until I say before you open the door!"

"You left it unlocked." You inform her as you hear her start moving around in there, making her very quiet again for a few moments, and you realize she must be thinking you may already have spied on her.

"Well, come on in then..." She says eventually, just as you're about to say something more, but you wait until you've heard her close the shower cabin before you dare opening the door. "And no peeking!"

"No, I promised!" You assure her as you step inside, but can't keep from oogling her just a bit through the frosted glass while you walk up to the toilet and get yourself in position. You can just barely make out any details of her, but from what you do see you can tell that her ass is every bit as beautiful as the rest of her, and that she tries to keep a close eye on you over her shoulder while she turns the water back on again.

You wait for a few moments before you say anything, managing to relieve yourself despite of your semi-hardness, but then you can't really keep yourself back any more. "Uhmm, I heard some noises from in here, just before I knocked...?"

"And still you decided to disturb me...?" She says with a little laughter, that's somewhere between sarcastic and just playful. "What kind of plan was that?"

"Well, I just figured you could still have use for my company..." You tell her suggestively, and see her reacting with the same elusiveness as you've come to expect from her by now. "I don't mean I'd neccessarily need to join you in the shower though, if you really don't want me to...! But I really like your voice, and perhaps you'd be happy just to have me nearby while... You know... While you keep doing whatever you were up to...?"

"That's... really nice of you, actually..." She says after another moment's hesitation, sounding a little touched even as she still seems to be thinking it over. "Uhmmm, well... If you're really okay with it...?"

"I'd wish for nothing more than joining you..." You admit, with a loving smile that you hope she can hear in your voice as well. "But... If this is the closest I can get to you...?"

"Fine then..." She whispers, happily, but barely loud enough for you to hear over the sound of running water, and then you see her leaning herself back against the glass to give you an even better view of her sweet behind. "So... do you like it loud, or squeamish...?"

"I prefer natural..." You tell her, smiling as you walk up and place the palm of your hand to the glass - acting like you're groping her ass, and then slowly move up along her body to rest on her shoulder.

"Nuh-huh..." She seems to agree, sighing softly in pleasure while obviously returning her attention to her own body again. Just a few moments later she's back to moaning again, more intensively than before you arived, and you can tell that she's really getting off on this idea of your's. "Mmmm... John...!"

"I'm right here, babe...!" You smile back at her, sharing a playful kiss with her through the frosted glass, before grabbing onto your own rising hardon and give it a few tugs while sensing your beloved working herself in a similar manner...