Hola! Magazine is reporting that the couple secretly wedded on Sunday, March 20 in a secret ceremony.
Casillas and sports journalist Sara has been dating since 2009 and had a son, Martín together in 2014.
The girlfriend of the Porto goalkeeper is currently pregnant with another child.
Hola! Magazine is now reporting that the couple secretly wedded on Sunday, March 20 in a secret ceremony.
According to the report, no guests or friends were invite to the simple civil ceremony.
The ceremony held in the Madrid suburban town of Boadilla del Monte according to the report.
Casillas, 34, famously kissed his girlfriend while she was interviewing him after Spain won the 2010 World Cup.
Watch the video below: