Machine Gun Kelly (MGK) swiftly shut down rumors of a romance with Sydney Sweeney during an appearance on Watch What Happens Live. Asked about their closeness at a Las Vegas event, MGK curtly told the inquiring fan to "shut up." The two actors previously starred together in the 2021 film, *Downfalls High*, and were seen interacting closely at a recent party. The rumors emerged shortly after MGK's split from Megan Fox and Sweeney's separation from Jonathan Davino.

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