Amigos son los amigos (TV series 1989-1992)

Carlín is a Casanova kind of guy on his thirties, living on his own, on a flat he rented to a girl friend of his. He frequents women on a promiscuous fashion, while makes a living working with his father. His life will take a turn when, unexpectedly, finds himself sharing the flat with the 19 yo son of his friend, who has no other place to live. - IMDb