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.

Since announcing their pregnancy, Megan Fox and Machine Gun Kelly have been nonstop talking about their exciting journey into parenthood.

The actress confirmed in 2023 that she and the “my ex’s best friend” hitmaker suffered a pregnancy loss during their relationship.

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 is welcoming a new addition to her family. On Monday, Nov. 11, the Transformers alum broke the news that she’s expecting her first baby with Machine Gun Kelly – and she announced her pregnancy with a provocative post. Fox posed completely nude and covered in black paint while cradling her baby bump.

Megan Fox is expecting her fourth baby and the first with her current partner, Machine Gun Kelly, and to make it clear that she is happy with her pregnancy, the actress showed off

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.

Megan’s upcoming bundle of joy isn’t her first—she has three boys with ex-husband Brian Austin Green and is a bonus mom to MGK’s daughter Casie Colson Baker. Brian is also the father of a son named Kassius and a baby named Zane, creating one big, blended family.

However, things publicly became messy the following year — and Megan later confirmed that they'd called off their engagement. The actor said of their relationship earlier this year, "I think that what I’ve learned from being in this relationship is that it’s not for public

The insider adds that Brian knew about the pregnancy before Megan announced it, saying "Brian is not going to make this wonderful moment in their life a time to bruise his ego. He is OK with it and was made aware of it before the world found out. Brian's cool with it."