Fox, 34, and Kelly, 30, made playful faces as they were spotted by cameras in the VIP section at the UFC Apex. They were seated next to Kardashian, 41, and Barker, 45, who color coordinated in edgy black ensembles, and looked quite cozy together.
"Kourtney Kardashian, Travis Barker, Megan Fox and MGK have had double date nights many times and are all good friends," a source tells ET. "They have a great time when they hang out as couples and it's very natural, easy and fun. They all have lot of shared interests like music, self-care practices and more. Kourtney and Travis are super into each other and Megan and Machine Gun Kelly are so in love. So it's nice for both couples to spend time with like-minded people."
MGK, Megan Fox, Travis Barker and Kourtney Kardashian in the house for #UFC260 🙌
"Kourtney and Travis are in total lust over each other and she doesn’t regret going public with their relationship at all," a source told ET earlier this month.
"The relationship was a long time coming because the attraction has always been there on both sides," the source added. "They love the fact that they have a true friendship and bonded that way before taking anything further and making things romantic."