Megan Fox and Machine Gun Kelly have been acting "like a couple," but they "haven't put a label" on their relationship

However, they have reportedly grown close again due to spending "pretty much every night" together with their little girl.

An insider told PEOPLE: "They're together often, but he's going on tour soon.

"He spends pretty much every night at her house with the baby, and they act like a couple, but they haven't put a label on it or made anything official.

"Megan's very happy with how he's stepped up for both her and the baby.

While they still have separate homes, they spend a lot of time together as a family. They're putting the baby first, and it's brought them closer in many ways."

They added: "Things are great now. He's amazing with the baby and she very much enjoys spending time with him."

Musician MGK, 35 - whose real name is Colson Baker - recently hailed actress Megan, 39, "the greatest partner" to have a child with.

Speaking on The Jennifer Hudson Show, he said: "It truly was an epic story of love, pain and a lot of magic.

"I had it with a person who is the greatest partner, the greatest partner to have had a child with."

He shared: "We go back and forth on who she looks like.

"Last month, she looked exactly like me and now she looks exactly like her."

The More Than Life rocker also has 16-year-old daughter Casie from a previous relationship, while Megan has Noah, 12, Bodhi, 11, and Journey, 9, with former spouse Brian Austin Green.

The rapper previously explained that his parenting "specialty" is bringing "music and laughs".

MGK told People magazine: "[I recently] wrote her a lullaby on a ukulele.

"Megan is in the no sleep club, for sure. I've been travelling a little bit, just doing some performances. So on those nights, I for sure, just hit the snooze button a million times and I'm catching up on all this.

"Women are in the rougher trenches of the newborn process, but my specialty is music and laughs and whatever I can do to make her smile and kind of get introduced to the world with love."

The couple announced their engagement in January 2022, but Megan confirmed they had called it off in March 2024.