Los hombres siempre mienten (1995)

When Martin is about to be expelled from some literature courses, an unexpected event gives a turn to his uncertain future as a writer. Taking advantage of the absence of his neighbor, a consecrated novelist who entrusts him with the care of his cat, Martín steals his identity and some pages of his latest novel, presented in the school as a result of his own work. As a result of this, the teacher congratulates him publicly and the girl he is in love begins to look at him with different eyes.

Unfortunately the movie Los hombres siempre mienten is not yet available on HBO Max.