The closest this gets to hinting about the premarital sex which probably occurs twice is a passionate kiss and the opportunity. No nudity.

On their first date, woman goes back to man's apartment, he tries to seduce her but she leaves. Several minutes later, she returns. Gallantly however, he offers to drive her home as being the proper decision.

On their second brief date, they sneak into her college dorm but are caught kissing in the elevator. She is then expelled from college for not being a "nice" girl, and her mother is devastated. Boyfriend admits to her father nothing happened in the elevator; but, he asks her father to help him maintain his male "reputation" by nothing getting out about him not scoring (double standard, anyone?).

Two women are drinking, one of them to excess and becoming drunk. This leads to an argument with her husband

The sound of an aircraft crashing is heard, but not seen. We hear that all the crew have been killed.