Jayden James, Britney Spears, Sean Preston.Photo: britney spears/instagram

britney spears

Britney Spears' teenage sons are “happy” for the star as she prepares to wed fiancéSam Asghari, but will not be present to watch her say “I do.”

Mark Vincent Kaplan, Kevin Federline’s longtime attorney, confirms to PEOPLE thatSean Preston, 16, andJayden James, 15, won’t be in attendance on Thursday when Spears, 40, and Asghari tie the knot.

“They’re happy for their mom and they are hopeful that Sam and Britney are starting a great future together,” he says. “It’s their night and they didn’t want to take away from them.”

A source close to the startold PEOPLE in Januarythat the “Gimme More” singer and Asghari, 28, had been spending time with Spears' boys.

“[She is] making an effort to see her kids more, and Sam is also bonding with them,” the source said, noting that it’s “been easier” for her to see her kids following the end of her 13-year conservatorship in November.

RELATED VIDEO: Britney Spears Is ‘So Excited’ About Wedding to Sam Asghari and ‘Wants It to Be Perfect’: Source

In December, Spears chronicled a trip to the immersiveFlutterart exhibit in Los Angeles on Instagram, and shared footage of Asghari pushing Sean and Jayden on a swing.

For more on Britney Spears and Sam Asghari’s wedding, listen below to our daily podcast PEOPLE Every Day.

Spears and Asghari, an actor and fitness trainer, werefirst romantically linked after they met on set of the singer’s “Slumber Party"music video. Spears later revealed in aradio interviewin 2017 that she and Asghari took nearly “five months” to reconnect after her video shoot.

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“I was like, ‘He was really cute, this guy was really cute,’ so I called him,” she said about digging up his phone number. “He’s just a really fun, funny person.”

The coupleannounced their engagementlast September, months before herconservatorship was terminatedin November. At the time, Asghari’s manager Brandon Cohen told PEOPLE that he is “proud to celebrate and confirm the engagement.”

“Britney is ecstatic,” a sourcetold PEOPLEafter Asghari popped the question at her Los Angeles home.

“Sam has been Britney’s rock for years. He makes sure that she eats well and works out,” another insidertold PEOPLEin June 2021. “She leans on him for everything. He works and has his own life too, but is around as much as he can.”

In January, a source close to Spears told PEOPLE that Asghari was “bonding” with her two sons.

britney spears/instagram

britney spears/instagram

“Our love for each other is our strength. We will continue trying to expand our beautiful family. We are grateful for all of your support. We kindly ask for privacy during this difficult moment,” the couple concluded.

source: people.com