There are no shown sex scenes or nudity at all.
A woman tells her friend that she had sex with a man.
A man and woman are at a pool. He is seen without a shirt. She is wearing a one-piece swimsuit.
A man and woman kiss several times throughout the movie.
There is a strong suggestion that sex had occurred between a man and woman. They are shown afterward and he is wearing a robe while she is wearing a towel wrapped around her (having just showered). Her shoulders are seen. They briefly kiss. There is an extended scene where she is still just wearing her towel.
A man asks a woman to stay the night. They are later seen in bed naked but covered by a sheet (presumably after sex). Their shoulders are visible above the sheet. At one point the man shifts and his full torso and part of his leg can be seen.
A woman walks around a house wearing just a man's shirt.
A woman is assumed to be a prostitute.