Make sure to wash everything

You accept the bar of soap, and let her step into your stream of water. You later up your hands, and wash her lower back well. Leaving it sudsy, you lather up the rest of her back as well, and she doesn't seem to mind. You get some more soap on your hands, and proceed to lather her sides, and then her stomach. Still behind her, you next start to rub her tits, spreading the suds across them. They are small, but quite firm, and a pleasure to fondle. You hear the girl sigh contentedly. You glance around, to see if anyone has noticed, but the showers are now empty but for you two.

The girl reaches behind her back, and places her hand over your vagina, lightly brushing your labia. You continue to rub her tits, and she explores you further, pushing a finger inside of you, then bringing it back out to run circles around your clit. Leaving one hand on her chest, you drop the other to her pussy, lightly fingering her as well. She increases the movements of her hand, expertly working your clit out of it hood, playfully arousing you further and further. You grind your hips into her hand, lustful for more, as you increase the intensity with which you are working on her. Soon, you are both cumming on each other's fingers, as the shower water washes over your heads and down your backs.

You turn the girl around to face you, then bring your hand, covered in her juices, up to you mouth, where you lick it clean. She smiles, and does likewise, and if the taste of her on your fingers is sweet, the sight of her licking you off hers is sweeter. You turn off the water, and walk back to your locker. She follows you, then says in surprise, "hey, your locker is right next to mine!" You both laugh at the coincidence. You tenderly dry each other off with your towels. You put on a bra, but no bottom, and head over to the toilets to relieve yourself. You can feel the girl watching your bare ass as you walk away from her. When you return, you see that she too is wearing just a bra, and no bottoms, and is holding a dildo in her hands.