No Real Sex everything covered, also No Real Nudity as a back shot in a shower ranks with the Chippendales, the less that 5 nipple shots ( yes that's Single ), must have been intentional to get an R rating as the context was PG-13 and if 5 nipples blurred or covered would have given this movie PG rating

Livio shown in shower briefly. His butt is shown.

They have a threesome. Her breasts are shown, she receives oral sex, and both guys are shown thrusting on either side of her.

Joelle is shown in bed, waking up naked. Breasts shown.