Lábios Sem beijos (1930)

Lelita is a wealthy and rebel young woman, who meets the stranger Paulo Morano in a cab, and after an initial resistance, she falls in love with him. Meanwhile, her younger sister Didi tells her that she has an infatuation with a man called Paulo. Lelita believes that Paulo is cheating her with her sister and she breaks with him. Later, she realizes that her sister is dating indeed a homonymous and she committed a mistake with her boyfriend.