Foreveralone dudes:
Bathing together is a disappointment.
Sex is horrible in water, but that body pressed against you is going to really tempt you to try again. You don't get anything other than the tactile feeling either, since she's way too close to properly see anything.
There isn't enough room in a standard bath, so you can't get comfortable.
Sex right after a bath is a tightrope manouver since you either have to take the time to dry off or risk her drying out or the two of you falling on your ass mid-stroke. Even after drying, the moisture present is going to make it feel way stickier than if you just had sex before the bath and then cleaned yourself.
Showers are pretty awesome though.