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Machine Gun Kelly subtly shouts out ex Megan Fox as he sings 'Twin Flame' on her 40th birthday after rocky romance

Machine Gun Kelly sang 'Twin Flame' in concert on ex Megan Fox's 40th birthday on Saturday, May 16, amid relationship drama.

Machine Gun Kelly

Get the latest news about Machine Gun Kelly. Find exclusive interviews, video clips, photos and more on Entertainment Tonight.

mgk and Wiz Khalifa Team up for Breezy Summer Anthem "girl next door"

Teaming up for their first collaboration since 2013, the two superstars dropped a breezy summer track as they gear up for a ...