It's one of the more complicated celeb pregnancy announcements in recent times: Actress Megan Fox is expecting her third child with husband Brian Austin Green.

Thing is, the pair filed for divorce in August last year, and reportedly have no intentions of halting their divorce proceedings. Fox even poked fun at initial speculation about who the father of the unborn child was.

Now, 42-year-old Austin Green has broken his silence about the baby news, confirming that the pregnancy was unplanned.

“You know, nothing is planned,” he told PEOPLE at a racing event last Friday. “None of them are ever planned. You kind of just go with it.”

“At my age, to be having three babies, is crazy,” said the actor. “I’ll be 43 this year.”

The pair separated six months before divorce papers were filed, but have remained amicable co-parents to children Noah, 3, and Bodhi, 2 They had been married for 11 years.

According to gossip website TMZ, the separation with the 90210 hunk means the money Fox has earned since she filed for divorce — including her pay for her latest TMNT flick — is hers.

Not withdrawing the divorce petition could however result in greater entitlement to more child support for Green for their two and soon-to-be three children, TMZ said.

This story first appeared on News.co.au.