Brooklyn and Nicola Peltz Beckham share the one relationship rule they swear by

• Brooklyn and Nicola Peltz Beckham say honesty is the key to a strong marriage.
• The eldest son of the Beckham family, 26, and the billionaire heiress, 30, married in 2022.
• Their absence from David Beckham's 50th birthday party photos fueled rumors of a family feud.

Brooklyn and Nicola Peltz Beckham are sharing the one rule that keeps their marriage strong.

In an interview with Glamour published on Monday, the celebrity couple spoke about their relationship and agreed that honesty is the most important thing that young couples need to build mutual trust.

"Always be honest. There's nothing worse than keeping things from each other," Brooklyn, 26, told Glamour. Brooklyn is the oldest child of David and Victoria Beckham.

Nicola, 30, added that honesty was a value that her parents had instilled in her from a young age. Her father is Nelson Peltz, the billionaire founder of investment firm Trian Fund Management.

"My parents always told me, 'Tell us the truth, and we'll help you.' That mindset has stayed with me. Whether it's with friends, family, or in a relationship — honesty builds trust, closeness, growth. Real connection only happens when you're brave enough to be honest," Nicola told Glamour.

The couple first met at the Coachella music festival in 2017, but only started dating in 2019. In 2022, they got married at the Peltz family estate in Palm Beach, Florida.

During the interview, the pair recalled being told to make space for a quiet moment together during their wedding day — something they now recommend to others.

"Step away, breathe, be together. Those were my favorite moments. Weddings can be intense, especially when you're busy making sure everyone else is having fun. That little break reminded us what it's really about: us," Nicola said.

Brooklyn added that they managed to sneak away after the wedding to share a private moment.

"We took a quick drive, just the two of us. It was perfect. Also: love each other, be honest, and always protect one another," he said.

Over the past weeks, speculation about a Beckham family feud has grown after the couple was missing from Instagram photos posted by his parents from multiple events celebrating David Beckham's 50th birthday.

So far, neither the couple nor any members of the Beckham family have addressed the speculation publicly.

Brooklyn and Nicola are also not the only celebrities who have spoken about the habits they practice that help keep their marriage strong.

Rob Lowe says he and his wife go to couples therapy regularly because "it's like taking your car in and making sure the engine's running great."

"Frasier" actor Kelsey Grammer says thinking of love as a "contact sport" helps keep the flame alive in his 14-year marriage.

Jay Shetty says he avoids talking about work over dinner with his wife, even though they have a joint business venture.

Representatives for the couple did not immediately respond to requests for comment sent by Business Insider outside regular hours.