La Piel del amor

The Skin of Love is a 1973 Argentine romantic comedy-drama film directed by Mario David, who also wrote the script, working with Isaac Aisemberg. Shot in Mar del Plata, it stars Susana Giménez, Claudio García Satur, Héctor Alterio and David Llewellyn. Víctor Proncet composed the soundtrack. Though not critically acclaimed, it became a popular film on television in Argentina.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.