Anyone who keeps up with the world of the rich and famous knows that Kourtney Kardashian and Travis Barker as well as Megan Fox and Machine Gun Kelly are two of the most famous celebrity couples right now. While each of them is always in the spotlight separately — together the four have become the most talked-about couple BFFs in the industry.Related: Everything Kourtney Kardashian And Travis Barker Have Done Since Getting TogetherToday, we're taking a look at everything we know about just how these four became such close friends. From who met back in 2011 to just what they all bonded over — keep on scrolling to find out!

9 Travis Barker And Machine Gun Kelly Met Back In 2011

In the video above, which MGK shared on his YouTube Channel, the singer can be seen meeting Travis Barker for the first time. The two met backstage at a Blink-182 concert when Travis was 35 and MGK was 21 years old. It seems as if they clicked immediately and a beautiful friendship was born.

8 The Two Only Recently Started Working Together

Here's what MGK revealed about the two starts finally deciding to work on music together:

"This whole thing started out with one studio session. We’ve been great friends for a decade. So this was just like, 'Hey, let’s just do a random day of work.' The energy was so immense that came from it. And it was so powerful that Travis was like, 'F**k it, I’m blocking off two months of my life and we’re doing this album.' So I know it has some of that feel and some of that album’s classic nostalgia in this because otherwise, we wouldn’t have just stopped everything we were doing to do this."

7 MGK Started Dating Megan Fox In 2020

Hollywood star Megan Fox and MGK met in 2020 while filming the crime mystery movie Midnight in the Switchgrass in Puerto Rico.

Related: Megan Fox And Kourtney Kardashian Share Steamy Bathroom Photos With Travis Barker And MGK

Ever since then, the two stars have been spotted frequently together and in April 2020 Megan Fox filed for divorce from actor Brian Austin Green whom she had been with since 2004. In June 2020 Megan and MGK went public and ever since then they have certainly not been shy to share their relationship with the world.

6 Travis Barker And Kourtney Kardashians Started Dating In Late 2020

While it's unclear when exactly the Blink-182 drummer and the reality television star started their relationship, in January 2021 they were already very flirty with each other online. By now, anyone who follows either of the two on Instagram knows just how obsessed with each other they are and it certainly seems as if they are very happy.

5 Both Couples Love Sharing PDA Content On Social Media

While neither Kourtney Kardashian nor Megan Fox was ever very much into sharing saucy pics with their significant other it certainly seems as if their current relationships have changed them. All four of the stars share quite a lot of romantic pics on their Instagrams and that is certainly one thing the couples have bonded over.

4 Machine Gun Kelly And Travis Barker Got Matching Tattoos

As previously mentioned, the two musicians ended up working together recently and after two months of hard work MGK put out his fifth studio album Tickets to My Downfall in 2020.

Related: Fans React To Kourtney Kardashian And Travis Barker’s Extreme PDA In Italy

The album was a collaboration with Travis Barker and it seems as if they had so much fun creating that they are also releasing a second collaboration album titled Born with Horns later this year. As seen above, the two got the name of the upcoming album tattooed on their forearms as matching tattoos. If that doesn't scream BFFs, we don't know what does!

3 The Couples Love Going On Double Dates

It certainly seems as if the two couples enjoy each other's company and that's only natural, considering how close Travis Barker and MGK seem to be. Recently, the two couples were spotted on a double date after the VMAs — something we're sure we'll see a lot more of.

2 Megan Fox And Kourtney Kardashian Shared The Stage At This Year's VMAs

During the popular MTV Award show, the actress and the reality television star actually shared the stage to announce MGK and Travis Barker's performance. Megan opened up by saying "I'm a huge fan of this next performer. I've watched him grow, and not just as an artist, but also as a person," to which Kourtney added, "I'm a fan too, and I think his drummer is super hot." To no one's surprise, Megan added "New York, I need you to get extra loud for our future baby daddies."

1 Lastly, It Seems As If The Two Ladies Clicked Privately As Well

No one would be surprised if Kourtney and Megan became besties and in a way, it seems as if they're headed there already. The ladies certainly enjoy partying together as well as posing for fun pictures and it's clear that they have a lot of things in common considering that both of them have children with their exes and are dating rockstars now.

Next: Everything Kim Kardashian Has Said Publicly About Her Split From Kanye