The Keeping Up with the Kardashians star, 42, and the Blink-182 rocker, 45, are engaged, a rep confirmed to PEOPLE. Kardashian also confirmed the exciting news on Instagram by sharing pictures from the romantic proposal with the caption, "forever @travisbarker."
According to TMZ, who was first to report the engagement, Barker proposed at a beachside hotel in Montecito, Calif. The musician planned an elaborate floral arrangement in the sand before getting down on one knee and popping the question.
This marks Kardashian's first engagement, but she shares her three children — Mason, 11, Penelope, 9, and Reign, 6 — with ex Scott Disick. Barker was previously married to Melissa Kennedy from 2001 to 2002 and Shanna Moakler from 2004 to 2008. He shares stepdaughter Atiana, 22, son Landon, 17, and daughter Alabama, 15, with Moakler.
"Congratulations @kourtneykardash and @travisbarker I'm so happy for you guys love you guys so much!" Landon wrote in an Instagram Story of the newly engaged pair kissing.
For more on Kourtney Kardashian and Travis Barker's engagement news and other top stories, listen below to our daily podcast PEOPLE Every Day.
"So happy for you guys I love u both!" Alabama echoed on Instagram while giving a look at the ring.
Kourtney's sister Kim Kardashian also shared a slow-mo video of the couple making out, complete with a close-up of her sister's new rock. "KRAVIS FOREVER," she wrote on Twitter.
— Kim Kardashian West (@KimKardashian) October 18, 2021
PEOPLE confirmed Kardashian and Barker's relationship in January. They made their romance Instagram official in February after Valentine's Day, when the reality star shared a photo of the pair holding hands.
Jeff Bottari/Zuffa LLC/Getty Kourtney Kardashian and Travis Barker
A source told PEOPLE in March that Kardashian was "ready for a relationship with a more mature guy." Barker is "not a player" and is "really nice, chill and is an adult," the insider added.
Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Since then, their relationship has continued to heat up. From the pair packing on the PDA during a romantic trip to Utah to sharing a passionate kiss at the UFC 264 fight in Las Vegas, they haven't shied away from showering one another with affection.
Getty (2) Kourtney Kardashian, Travis Barker
Barker additionally called the Poosh founder the "love of my life" in May.
Before they gave love a try, though, Kardashian and Barker sparked romance rumors in 2018 and 2019 after they were spotted hanging out together in the Los Angeles area. Speaking to PEOPLE in March 2019, the musician denied that the pair were dating and said that they were simply pals.
RELATED: The Celebrity Engagements of 2021
"Kourtney's like a dear friend. That's it," he told PEOPLE at the 2019 iHeartRadio Music Awards. "I mean, I love her to death. I love her family to death. But yeah, just friends," Barker said at the time.
Shortly after they started dating, a source told PEOPLE that Barker had gotten the seal of approval from Kardashian's family.
"Her family and friends all really like him," the source said. "Their kids all get along too, which is sweet."
RELATED VIDEO: Kourtney Kardashian and Travis Barker Kiss as They Make Red Carpet Debut as a Couple at 2021 MTV VMAs
Disick, 37, also gave his blessing to his ex's new relationship around the same time, sharing during the Keeping Up with the Kardashians reunion, "I think if you really love somebody, you want them to be happy no matter what. So I do give her a blessing to be happy."