I was waiting for the clarification "She prefers showering" but apparently that's not it?
Maybe she just prefers to bathe every other day? Apparently that's more than enough according to experts. This seems to be more about her horndog of a boyfriend wanting to ogle her wet, naked, suds-covered body in the bathroom. What, fondling her while she's trying to play a video game (as per the cover) isn't a valid alternative? You have to include a rubber duck in the action or it just doesn't do anything for you?