No nudity or sex in this film.
The third scene in the film depicts a man and woman in bed, kissing passionately; they discuss their upcoming wedding. This scene lasts for five minutes with an interruption at the door in the middle; the man gets out of bed and puts on a coat before answering the door, as he is apparently unclothed. It's very mild.
Later on, a man takes a shower and we can see the outline of his body through the glass. (again, nothing explicit)