Three on a Couch

The name of this movie is Three on a Couch released in 1966-03-01 and it's main theme is An artist has an opportunity to go to Paris and wants to bring his fiancee along. However, she's a psychiatrist who currently has three female patients who don't like men. So, he guises himself as three different men to gauge their trust and hopefully cure them so that his fiancee can go with him..