Sean Penn wants to be a daddy for the third time, with Charlize Theron

Jan 23, 2015 at 12:26 p.m. ET
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Charlize Theron and Sean Penn are pretty serious about each other and their relationship just keeps blossoming. In fact, the couple is reportedly ready to start a family together.

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A source revealed to People magazine that the Gangster Squad actor has plans to adopt Theron's son, Jackson, age 3.

"Charlize and Sean are very serious," a source close to Theron reportedly told People. "Charlize says this is it. Jackson already calls Sean daddy."

"This is the first step toward them getting married," the source adds.

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The South African-born actress and Penn have been dating for over a year (since taking their longtime friendship to the next level), and are even rumored to have gotten engaged while on a trip to Paris, France.

Adopting Jackson (who Theron adopted herself in early 2012, when he was 4 months old) would make the tiny tot Penn's third child, as he shares two children, daughter Dylan and son Hopper, from his previous marriage with wife Robin Wright — and Penn might not stop at three kids.

According to Us Weekly, the Oscar-winning stars have big plans for their relationship and they are already talking about more kids.

More: Sean Penn's daughter has a distinct opinion of Charlize Theron

A source revealed to the mag that "Sean always knew that to truly earn a place in Charlize's heart, connecting with Jackson was one of the most important parts."

The source added, "There is still talk of adopting again and giving Jackson a brother or a sister."

We're glad to hear that things are going so well between this A-lister couple.