Mel Gibson In Mad Rush To Marry Young Lover!

Lovestruck MEL GIBSON wants to wed a sexy young writer – even though at 24, she’s less than half his age!

But the actor’s seven children are warning him to pressure brunette beauty Rosalind “Rosey” Ross into signing an ironclad prenup so he won’t get taken to the cleaners again!

The “Mad Max” star, 59, is still worth a whopping $425 million, even after giving half his fortune to ex-wife Robyn Moore in their 2011 divorce settlement.

Mel also had a bitter breakup in 2010 with girlfriend Oksana Grigorieva, agreeing to pay her $750,000 over five years to support their love child, Lucia.

That was later cut to $350,000 when Oksana blabbed on “The Howard Stern Show.”

“Mel’s kids are happy he’s found love with Rosey,” said a source, “but they’re pushing him to have her sign a prenuptial agreement.

“They’re worried their hot-tempered, hot-blooded dad is so enamored right now, he’s liable to do anything.

“They want to make sure he protects his fortune!”

Rosey was a writer on the short-lived El Rey Network series “Matador.”

According to insiders, Mel met her when she signed on to co-write a feature script for his company, Icon Productions.

She’s also written a script for the upcoming Iraq war drama “Lioness,” won a gold medal at the World Equestrian Games, and posed nude for ESPN Magazine’s Body Issue!

“Mel is captivated with Rosey,” said the insider. “In June, he whisked her off to a romantic vacation in Costa Rica, where he owns a 500-acre retreat, and then to Panama.”

Meanwhile, Mel’s brood – who range in age from 34 to 16 – are concerned about their dad.

The source said: “They have his best financial interests at heart, as well as their own! They could one day inherit his loot.”