Nothing to Hide (1981)

This film concerns the adventures of two men who are best buddies. One is an incorrigible ladies' man, the other is the shy, square type, more like a side-kick to his friend. While the Casanova keeps getting in and out of trouble with women, the nerd finally meets a girl he connects with emotionally and eventually, physically (in one of the most tasteful, yet erotic scenes of the genre).