Iker Casillas
Carbonero was in a relationship with Spanish and then Real Madrid goalkeeper and captain Iker Casillas from 2009 to 2021. In January 2014, she gave birth to their son, Martín. In July 2015 Sara Carbonero and Iker Casillas moved to Porto, in Portugal, as the ex-Real Madrid goalkeeper signed for Porto. In November 2015, the couple announced they were expecting their second child. On 20 March 2016, the couple married. On 2 June 2016, Sara gave birth to the couple's second child, Lucas. On 12 March 2021, Carbonero and Casillas announced their mutual decision to separate after 5 years of marriage.