You can see Eva Mendes' nipples and areolas very clearly though her shirt in her first scene.
A photo of a woman in lingerie is shown hanged on the wall with a man's hand on her buttocks. Although the photo is slightly blurry it still shows the photo content.
Eva Mendes and Ryan Gosling lie in bed together after sex and are viewed from an angle at extreme closeup. It is implied that they are nude, we don't see anything other than side breast nudity. No male nudity is present.
A young man passionately kisses a young woman, almost leading to sex, but the young man walks away before further sexuality can occur.