Kourtney Kardashian has jokingly said she will "destroy" her new man, Travis Barker.

The Keeping up With the Kardashians cast member wrote a funny love note with her boyfriend after they went public with their relationship. The Blink-182 singer shared a handwritten note from the mother-of-three to his Instagram Stories last night.

The note read: "To lots of fun adventures, may we destroy each other completely. Love, Kourtney."

[[imagecaption|| Credit: Instagram / Travis Barker]]

However, it appears that Kourtney was only echoing Travis' own sentiments. Earlier this week, the 45-year-old took to Twitter to write: "May we destroy each other completely."

The pair fuelled rumours they were dating after sharing matching social media posts on Valentine's Day. Several days later, they shared a photo of them holding hands - seemingly confirming the union.

[[imagecaption|| Credit: Instagram / Kourtney Kardashian]]

Speaking about their relationship, a source told US Weekly: " ‘Kourtney and Travis have been spending a lot of time together, but they’re taking their time and trying not to move too fast.

"No one is surprised by their relationship. They have big modern families [and they] both are dedicated to their kids. ‘They come from these modern families with modern relationships. Both of their families are supportive. It’s still very new, but they are both very excited by how easy it all has been."

The pair have known each other and been friends for years. They are neighbours in the same Calabasas, California, gated community. The insider added that they have "so much in common".

Kourtney has three children with her ex Scott Disick - 11-year-old Mason, 8-year-old Penelope, and 6-year-old, Reign. The Blink-182 musician has two kids, 16-year-old Landon, and 15-year-old Alabama with ex-wife Shanna Moakler.

"He’s my friend and coparent, and I want him to be happy," Moakler told Page Six. "And if being with her makes him happy, and she’s happy, I’m happy for both of them, honestly."

Kourtney Kardashian sends Travis Barker 'sexy' love note after confirming romance