Jaime Del Burgo, 53, who is based in the UK, has contributed to a tell-all book about the Spanish royal, where he claims he was still romantically involved with the Queen after her wedding.
Telma Oritz has been forced into the spotlight after her ex-husband claimed he had a relationship with her sister Queen Letizia of Spain before their marriage together.
Queen Letizia, 51, was seen arriving for an event in Madrid organised by the BBVA Microfinance Foundation today - which is aimed at combating digital poverty.
The royal, 51, opted for a red power suit for the engagement at the Museo Nacional Centro de Arte Reina Sofía in Madrid with her husband King Felipe, 55.
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