I Will Treat You Like a Queen (1964)

Antonis is married for four years with Eleni, and despite they are rich they live in a ruined house. Antonis who is very focused on how to make more money and nothing else, in the beginning of their marriage made his wife to write at her rich uncle in the USA, that she was widowed, so that her uncle continued sending her 200$ checks every month. One day Eleni's uncle comes in Greece but he also is accompanied by a man who likes Eleni and wants to marry her. So the problems for Antonis start when he has to pretend that he is only some random guy that rents a room in Eleni's house and nothing more.