Das Wunder der Liebe (1968)

The story begins with an emphatically serious discussion between Kolle, the sex researcher Prof. Hans Giese and the psychologist Wolfgang Hochheimer. Director: Franz Josef Gottlieb

‘Miracle of Love’
HOWARD THOMPSON. Published: April 26, 1969

IF “The Miracle of Love” I achieves any kind of miracle it will be known only to those who manage to stay awake. The movie package that arrived yesterday from West Germany at the World Theater is nothing but a tepid, tame and dull lecture on sex enlightenment and sexual harmony in marriage, narrated by the chap who wrote and produced it. A handful of people self-consciously act out a few vignettes.
Even with its generous display of nudity, the picture is entirely tasteful. In no sense is it a peep show, unlike the usual cavalcade at the World. The enacted episodes, with two lengthy chapters on marital discord, are about as new and startling as the Farmer’s Almanac.
The person responsible for the film is Oswalt Kolle, a highly successful West German journalist who writes a sex-advice column. Mr. Kolle, a pleasant, dignified man, opens the picture, looking into the camera and more or less contending that sex is here to stay. Chiming in, no less authoritatively, are two doctors as scientific consultants, although the film’s dubbed English is extremely flat.
What follows, contrasted with today’s movie permissiveness, seems as neive and even old-fashioned as it is inoffensive.

Plot from TCM.com

As Oswalt Kolle, a celebrated German columnist and marriage counselor, discusses the effects of sexual repression in marriage with two university professors, their exchange is illustrated by sequences depicting how the sexual development of the child is influenced by the repressions of a puritan society. Two dramatizations then demonstrate how unenlightened children often become unhappily married adults: After 6 months of marriage, Petra confesses to her husband, Thomas, that she has been unable to attain sexual satisfaction. Thomas’ pride is hurt, and an argument ensues, but the couple are eventually able to examine their sexual inhibitions and hidden fears, enabling them to achieve mutual sexual satisfaction. Claudia and Martin, married 7 years, the parents of two children, face problems in their marriage stemming from Martin’s preoccupation with his business and his neglect of Claudia’s sexual needs. Claudia’s frustration is expressed in a dream of self-gratification, and she blurts out her unhappiness to Martin in a moment of despair. Their sexual problems are resolved as Martin cancels his business plans and takes Claudia to the country hotel where they spent their first night together.