EXCLUSIVE: Tom Cruise 'Has Banned New Girlfriend Ana de Armas From Even Mentioning Estranged Daughter Suri' — As He Plans 'Do-Over Baby'

Tom Cruise is laying down the law in his love life – and one rule tops them all.

"Don't bring up Suri is his big thing," a source close to the actor told RadarOnline.com – adding: "That topic is completely forbidden."

The 62-year-old Mission: Impossible star is said to have banned new girlfriend Ana de Armas, 37, from even mentioning his estranged daughter, Suri Cruise, 19, as their relationship grows increasingly serious – and because he wants to have another child with her to "make up for his failure with Suri."

But Cruise, who has been romantically linked to de Armas after a string of private dates and a high-profile appearance at David Beckham’s 50th birthday party earlier this month, is running his new relationship with the same strict control that has defined much of his private life for decades.

Cruise has not been publicly seen with Suri – his daughter with ex-wife Katie Holmes, 45 – in over a decade.

The teenager, who recently dropped her father's surname in favor of her mother's middle name 'Noelle,' is believed to have had little to no contact with Cruise since the couple's headline-grabbing 2012 divorce.

Holmes, who was widely reported to have orchestrated a covert escape from the Church of Scientology with her then-six-year-old daughter, is said to have signed an iron-clad NDA that keeps her from discussing their split.

Now, as Cruise reportedly courts de Armas with lavish gestures – including flying her in from Madrid on his private jet and whisking her to an exclusive Michelin-starred dinner in London – insiders say his past remains firmly off-limits.

"Tom is charming, generous and intense, but he's also deeply structured," one source said. "He has strict rules about what can and can’t be talked about, and Suri is the ultimate red line."

Another insider revealed: "Ana was made aware early on that Tom won't discuss Suri. It's considered a painful subject. His inner circle knows it’s not to be mentioned – ever."

The actor's adopted children with Nicole Kidman – Isabella, 32, and Connor, 30 – are still in touch with him and have already given de Armas their seal of approval.

But Suri, who has built a quiet, independent life in New York with Holmes, remains entirely absent from Cruise’s public and private world.

Court documents from 2013 confirmed Holmes had cited protecting Suri from Scientology as a reason for her divorce from the star.