I can’t remember the last time I showered without my boyfriend and yeah all the gross stuff (butthole cleaning and so on) definitely happens. I’ve seen him soap up his balls so much all of his genitals disappeared into the foam (not saying he’s small...he’s not he just put so much soap there that it was all gone), I’ve seen him lift his balls for adequate soaping. He’s watched me thoroughly rinse my vagina. It’s not awkward. We usually laugh and joke about it. I’ll put my leg on the wall and he’ll say “time to clean the vag?” And I’ll say “gotta keep the pussy happy” and then we laugh about it. He will put his face in the water turning his back to me and I’ll jokingly hump him from behind. We have a blast messing with each other and nothing ever gets awkward. I mean sex is weird and full of fluids and weird noises...how can you have sex with someone and then be afraid of them seeing you shower? Lots of people must feel this way but for me I’m kinda like “he’s been in my asshole what could get any more personal than that?”