However, due to Teitelboim's frequent absences caused by party activities, persecution, and imprisonment, their marriage suffered and eventually ended in 1957 when Weitzmann left for Cuba with Jaime Barros.
While in exile in Moscow following the Chilean military coup d'état on September 11, 1973, they raised Farías' son, Roberto Nordenflycht, as well as their own daughter, Marina.
Roberto, inspired by Teitelboim's communist ideals, joined the Manuel Rodriguez Patriotic Front and tragically lost his life in August 1989 during a guerrilla action in Chile.
His first book Antología de poesía chilena (Anthology of Chilean Poetry) was published in conjunction with Eduardo Anguita in 1932, and compiled the great poets of Chile.
His series of memoirs, Un muchacho del siglo XX (A Boy of the Twentieth Century, 1997), La gran guerra de Chile y otra que nunca existió (The Great War of Chile and Another That Never Existed, 2000) and Noches de radio (Radio Nights, 2001) present from a political and social perspective the great arch of Chilean history during the 20th century.
His best known capacity is that of a biographer, in which he wrote about Jorge Luis Borges, Vicente Huidobro, and with the most critical acclaim, Pablo Neruda and Gabriela Mistral.