The love affair between Aureliano Jose and Amaranta is scandalous and is leading towards what the founding matriarch of the Buendia family feared. Amaranta is a virgin who denies any new lover after the suicide of Pietro Crespi. She raised Aureliano Jose son of Colonel Aureliano Buendia, and she used to undress in his presence and sleep with him at night, but as soon as Aureliano Jose entered adolescence he fell in love with her aunt Amaranta. Though Amaranta resists him but she in deep of heart also wants him.
Ursula Iguaran wife of Jose Arcadio Buendia fears that if they would have children with incestuous relationship (José Arcadio Buendía and Ursula Iguaran are first cousins) they will be born with a pig's tale. Ursula's fear is true because she has knows that in past times when José Arcadio Buendía's uncle married her aunt, their child born with the tail of a pig and remain virgin his entire life of 42 years. He died when his friend butcher friend cut his tail.