Seed of Innocence (1980)

In the beginning of the movie, a young guy is taking off a young woman's panties. Her naked legs are seen. Implying sex. I fast-forwarded from there, so I don't know if the film shows the actual sex.

After the restaurant scene, the young guy, gets off work, and his friend takes him to a sleazy place that shows one unattractive woman wearing pasties over her breast and she's wearing some type of underwear.