La vie est dure, nous aussi

Plot: La vie est dure, nous aussi is a sentimental comedy with a protagonist who is extremely discreet, extremely solitary and extremely egotistical. Charles, a native of Marseilles, is now living in Paris, and he has to take care of the dog of a girlfriend. He is also an insomniac and a hypochondriac. But he has one virtue: he loves to listen to people. Walking the dog opens up new territories for Charles who is discovering something new each day. One day a girl crosses his path, and he immediately recognizes her as the love of his life. There is one problem. How is he going to find her?