Thou Shalt not Covet thy Son's Wife
No desearás la mujer de tu hijo (original)
An elderly man falls in love with a beautiful young woman, without knowing that she is in love with his son.
Starring Fernando Soler, Pedro Infante, Andrés Soler, Carmen Molina, Alejandro Ciangherotti, Amelia Wilhelmy, Amanda del Llano, Salvador Quiroz, Irma Dorantes, Mariachi Vargas
It's a drama movie, and has a rating of 7.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Indonesia.