Fidelity (2000)

One scene contains nude men being photographed in a locker room (full frontal nudity, though not sexualized), and some photos including a penis close-up are seen later in the film.

Clélia and Clève kiss and remove some clothes, it's implied they have sex. Scene cuts to them on couch partially clothed and partially blocked by furniture. He gets dressed and is shown to be naked but no nudity is shown. Her breasts are very briefly shown as she gets dressed.

Clélia has sex in a locker room with a hockey player. He's fully nude behind her. She's wearing a shirt. No nudity is shown (although it appears to show her full frontal, I'm pretty sure it's just shadows).

Clélia removes her shirt to go to bed and as she does it can very briefly be seen she's naked. No nudity is shown.

Clélia removes her panties while wearing a very long dress and asks Clève to give her a baby. She removes his shirt and gives him a handjob. They have sex and the top of his butt is briefly visible.

A girl is shown from a distance dancing topless in a window.

A woman is shown giving a man a blowjob in a public place. Both appear fully clothed.