• Machine Gun Kelly referred to Megan Fox as his "wife" while performing at the Billboard Music Awards 2022 Sunday night
  • He also dedicated his performance of "Twin Flame" to their "unborn child"
  • Fox said on the red carpet that "Twin Flame" has a "special, secret meaning" and makes her emotional

Machine Gun Kelly raised eyebrows when he referred to fiancée Megan Fox as his "wife" and mentioned their "unborn child" at the Billboard Music Awards 2022 Sunday night.

Kelly took the stage at the MGM Grand Garden Arena in Las Vegas Sunday to perform the song "Twin Flame." After playing a solo on the guitar, he announced: "I wrote this song for my wife," E! News reported.

The 32-year-old musician, who was nominated for top rock artist, then began crooning the lyrics, which include the chorus: "You're too good for me/I'm too bad to keep/I'm too sad, lonely/I want you only."

During the performance, he also paused and said, "And this is for our unborn child," before continuing with the song.

"Go to sleep/ I'll see you in my dreams/ This changes everything/ Now I have to set you free," he sang, as the sound of a heartbeat followed shortly after.

It is unclear if Kelly was announcing that he and Fox, who also attended the event, secretly got married and are expecting their first child, but The Hollywood Reporter noted that the line mentioning an unborn child does not appear to be part of the lyrics of "Twin Flame."

Viewers and fans took to Twitter to air their confusion as well as to speculate about the meaning behind Kelly's comments.

"Did Machine Gun Kelly just announce a pregnancy or am I trippin'?" one person tweeted.

Another Twitter user speculated: "I thought it was announcing a [pregnancy] loss... He said, 'see you in my dreams.'"

One fan claimed, "In his Mainstream Sellout magazine, [Kelly] shared that [Fox] miscarried. He wrote the first part of the song two years ago for her birthday. Regarding the miscarriage, he initially wrote a song called 'One Day and 10 Weeks,' then a song called 'Last November.'"

"For anyone confused about Machine Gun Kelly’s performance, he said, 'This is for our unborn child,' because they had a miscarriage. The heartbeat that was played in the song was the baby’s," a fourth user tweeted.

Kelly tweeted about "Twin Flame" after the award show, writing that it "broke my heart to sing the end of that song."

"I recorded 'Twin Flame' 2 years ago today, the second half came a year later. Beautifully serendipitous getting to sing it for you tonight," he wrote in a second tweet.

During a red carpet interview at the 2022 BBMAs, Fox confirmed to Entertainment Tonight that Kelly's "Twin Flame" had a "special, secret meaning" that makes her emotional. However, the actress jokingly said that she doesn't want to cry during his performance because it would ruin her makeup look.

The couple — who met while filming their movie "Midnight in the Switchgrass" — announced their engagement in January.

In their first joint interview as a couple, Fox called the musician her "twin flame" and said that they had felt an instant connection on set.

"I knew right away that he was what I call a twin flame," she said at the time on the "Give Them Lala ... With Randall" podcast. "Instead of a soul mate, a twin flame is actually where a soul has ascended into a high enough level that it can be split into two different bodies at the same time. So we're actually two halves of the same soul, I think. And I said that to him almost immediately, because I felt it right away."

Machine Gun Kelly and Megan Fox
US rapper Machine Gun Kelly and actress Megan Fox attend the 2022 Billboard Music Awards at the MGM Grand Garden Arena in Las Vegas, Nevada, May 15, 2022. Maria Alejandra CARDONA / AFP