I see nobody's answered you probably because they don't want you to know our deep dark secrets! I occasionally get one hair on the underside of my boob that I pluck out. It's perfectly normal. It's a result from a combination of genetics and hormones. Why do you ask?

I do have body hair in surprising places. The only thing is besides the hair on my armpits and my bush, most of my body hair is less perceptible as its fine and close to the color of my skin.

But even if a companion isn't fully naturally groomed, unless there are hordes of heaux waxing their boobs, I'm sure this shouldn't be too hard to find.