Margarita se llama mi amor

"Margarita is the name of my love" is the title of a Spanish movie directed by  Ramón Fernández in 1961. The title is based on a military song (sung in the video by the guys in the truck). It is the story of a wealthy student of philosophy in Madrid. All her classmates fall in love with her, but she is interested in her literature professor. Apparently love among them triumphs in the end (I was unable to get the movie, only the trailer).