Los Angeles, California - Megan Fox has reportedly set boundaries with Machine Gun Kelly after welcoming their baby girl.

The exes welcomed their daughter on March 27, but per Us Weekly, the Transformers star has already set "rules" regarding their co-parenting dynamic.

A source dished that Megan "is allowing MGK to be there and be in their daughter's life."

They explained that the New Girl actor is "focused on their baby and is so in love," but "it's all her rules, under her roof right now, and has been on his best behavior."

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The insider noted that the former twin flames are "in a good place" despite their latest split and that the rapper-rocker has been "helpful" and is making "a huge effort."

As for whether Megan will ever reunite with the Bloody Valentine artist, the tipster explained that MGK "has expressed he wants to make it work between them again," but the new mom is "not caving in."

They added, "Megan feels at peace and closed the door on the relationship." But are the exes truly over?