Megan Fox’s ex-husband, Brian Austin Green, has long intrigued fans, especially as Fox prepares to welcome her first child with fiancé Machine Gun Kelly. Known for her roles in Jennifer’s Body and the Transformers series,

"Welcome little one," the former 'Dancing with the Stars' pro wrote on her Instagram Stories on Monday, Nov. 11

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."