Carlos died childless, and the throne was passed to his youngest sister's youngest son, Fernando.
Carlos was regarded as very handsome, and received many requests from various nobles to marry one of their daughters; such as from François I, the King of France, who offered him the hand of his daughter: Marie. Carlos refused; and sent an angry letter to the king. Eventually Carlos agreed to marry Victoria, Princess of Italia, due to the extreme pressure from his family and vassals. The two never had children, prompting some people to speculate that he was homosexual, which was indeed true. Upon her deathbed, Empress Victoria reveald to her son that she had always known Carlos was secretly in love with Diego de Valencia, the emperor's most trusted servent and advisor. Despite this, Victoria and Carlos were on good terms, and Victoria refused to betray her husband, even when confronted about it. Carlos frequently referred to Diego as his "best companion", "favorite servant", and wrote several poems and odes to him; including one where he cited that "if it was accepted, he would marry him in a heartbeat". Unfortunately for him, homosexuality was seen as weird at best and a capital sin at worst, and Carlos had to keep it a secret from his nation.