During the premiere of Peltz Beckham’s new film, Lola, Gomez posed for photographs with her friend on the red carpet.

Speaking with PEOPLE at the premiere, Peltz Beckham, 29, said that having Gomez’s support meant so much to her.

“Oh my God, [it’s] the best thing in the world,” she raved, before then referring to her longtime friend as “my wife.”

Lola, an upcoming drama from Vertical Entertainment that she stars in and wrote the screenplay for, also marks Peltz Beckham’s directional debut.

“I never planned on writing,” the star, who married husband Brooklyn Beckham in 2022, told PEOPLE on Saturday. “Writing was such a personal thing for me. I was always part of my acting process when I got ready for characters, and I would journal as my characters. It was so therapeutic for me and just private, and I loved it so much.”

“And then one day I was just kind of like, I’m just going to see what this looks like and try it, and I just took inspiration from my life,” she continued. “… I just think it is a really important story to tell, and I hope people feel connected to it, and connected to my characters, and I’m so lucky I got to work with such unbelievable actors to bring them to life.”

Peltz Beckham — who wore a dress designed by her mother-in-law, Victoria Beckham — also spoke about Gomez’s relationship with Benny Blanco at the L.A. premiere.

“Benny is so incredible,” she told PEOPLE. “We love him so, so much.”

Noting that the musician, 35, is “an incredible cook,” Peltz Beckham compared him to her own love, stating, “Brooklyn and him love to cook.”

“Selena and I were like, ‘Wow, we really won this,” she added.

Lola is scheduled for release on Feb. 9.