Megan Fox and Machine Gun Kelly are "very excited" to welcome their first baby together, a source exclusively tells PEOPLE. "They can't stop talking about the baby," the insider says.

Parenthood isn’t a new role for either star. MGK, for his part, is father to 15-year-old daughter Casie, whom he shares with ex Emma Cannon. Meanwhile, Fox shares sons Noah, 11, Bodhi, 9, and Journey, 7, with ex-husband Brian Austin Green. (Green, for his part, has moved on with fiancée Sharna Burgess, with whom he shares 2-year-old son Zane.)

Megan Fox and Machine Gun Kelly are on cloud 9 after announcing they’re expecting their first child together, and an insider exclusively tells In Touch that they believe the pregnancy was “meant to be.

Megan Fox and Machine Gun Kelly are expecting a baby together, happy news Megan announced with a photo of herself covered in what looks to be black oil (a very on-brand announcement). And while the couple have had some ups and downs in their four-year relationship, Megan’s pregnancy has brought them closer together.

Machine Gun Kelly joins The Voice as Gwen Stefani's Playoff Advisor, to help give contestants during the high-stakes Playoffs stage of the show.