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When he dedicated his performance to "their unborn child" during Billboard awards performance. The rapper and punk rocker introduced his performance of Twin Flame by telling the audience: "I wrote this song for my wife." Machine Gun Kelly comments on the stage. And Halfway through the performance, he shocked the crowd by saying: "This is for our unborn child," as the sound of a heartbeat played. The rapper and Transformers star have been engaged since January and have previously referred to each other as husband and wife.