Shanna Moakler Says She's 'Happy' for Her Ex-Husband Travis Barker and Kourtney Kardashian

Michael Bezjian/Getty Images; ABC via Getty Images; Charles Sykes/Bravo/NBCU Photo Bank/NBCUniversal via Getty Images Shana Moakler, Travis Barker, Kourtney Kardashian

Shanna Moakler is supportive of her ex-husband Travis Barker's new relationship with Kourtney Kardashian

"He's my friend and co-parent, and I want him to be happy," the actress and model, 45, recently told a paparazzo, according to Page Six.

"If being with her makes him happy, and she's happy, I'm happy for both of them, honestly," added Moakler, who was spotted with her boyfriend Matthew Rondeau, 28.

Barker shares children Atiana, 21, Landon, 17, and Alabama, 15, with ex-wife Moakler, whom he was married to from 2004 to 2008.

Meanwhile, Kardashian and her ex Scott Disick share three kids: sons Mason, 11, and Reign, 6, as well as 8-year-old daughter Penelope.

RELATED: Kourtney Kardashian 'Didn't Expect' Her Friendship with Travis Barker to 'Turn Romantic': Source

In January, a source told PEOPLE that Kardashian, 41, and Blink-182 drummer, 45, had been "dating for about a month or two," adding that "they've been friends for a long time, but it's turned romantic."

"Travis has liked her for a while," the insider shared.

RELATED VIDEO: Kourtney Kardashian Is Dating Travis Barker: Source

Kourtney Kardashian Is Dating Travis Barker: Source

"They've been friends for a long time but it's turned romantic," a source tells PEOPLE

Kourtney Kardashian/Instagram

Earlier this month, Kardashian and Barker celebrated their first Valentine's Day together — and made their relationship social media official.

And last Tuesday, Kardashian shared a photo on Instagram of the couple holding hands. Barker also shared the same photo on his social media account.

"He's a good guy and a really great dad," a source previously told PEOPLE. "Her family and friends all really like him. Their kids all get along too, which is sweet."