Jongwoo:

In Eden?! Where everyone can walk in?! Hell no! He's taking you to a gym, buying membership, just so you can shower there.

Though refuse and he will go with it; keeping guard at the door, scaring off any of the residents who dare try to take a shower. When you ask him to wash your back his face goes bright red, swallowing so much, trying to play it off but his shaky hands say enough. Will scrub your body without looking, maybe bit too harsh as he tries to be quick about it. Tells himself the whole time: 'This isn't anything sexual, this is what partners do, just helping'.

Moonjo:

Gladly. Runs the cloth over your hand, watching your skin as if he wants to push a knife across it, peel it back, have a taste of the flesh beneath.

His hands will afterwards glad across your skin, humming about its smoothness, how clean it is now. Fingers glide, linger, circle areas, making your body shiver. Fingers go to the back of your neck, massaging the sides of it, with slight pressure to them. Any harder or longer and you would have to move away, but it never goes there; his hand leaves before that with a playful "My turn~".

Junghwa:

OOOOOOHHHHH! Whole mind goes blank yet also frantic. Quick nods, clearing throat to quickly say yes without voice cracks. Tells herself this isn't anything sexual, it is nice romantic gesture of trust and growing closer.

Helps wash your back as if this is her true job; not leaving a single spot untouched. If you are insecure and she knows it she will make sure to give plenty compliments. Though honestly she doesn't have to; for her eyes alone say enough. Sparkles of adoration and witnessing beauty.

A single mistake, discomfort, etc, and that will stick in her mind FOREVER. It shall never happen again cause she will make sure it won't.