The Transformers star gave birth to her third child with Brian, 43, on August 4, and the rocky pair has named their son Journey River Green, reports E!
The couple, who were on the verge of divorce just a few months back, already have two sons; Noah, three, and Bodhi, two.
“Brian and Megan have been working on themselves as individuals and things have gotten better between them as a couple,” an insider tells E!
“They have been getting along great. They are best friends and know each other very well.”
“They admire each other on how they are as parents and are looking forward to bringing their third child into this world,” the source adds.
The gender of the 30-year-old’s baby was first revealed by her father Franklin Fox earlier this year.
He shared: “Megan is an amazing mom and I can’t believe she is going to have three boys. Becoming a grandfather has been a wonderful experience and brought us all even closer together.
“All I can say is they are together and they are happy. I’ve met Brian a ton of times now and he is a great guy.
“I am the grandfather of her two gorgeous boys and now she has another boy on the way. I couldn’t be prouder of the woman my little girl has become.”
A source told UsWeekly they are “totally back together” despite Megan filing for divorce in 2015.
‘They’ve been through a lot, but this makes more sense for the kids and the new baby,” the insider added.