Heidi Klum won’t marry Martin Kirsten until prenup is in place

OHMYGOSSIP — Heidi Klum is going to marry her bodyguard boyfriend Martin Kirsten — but only if he signs an ironclad prenuptial agreement that gives him absolutely nothing. The Project Runway star is keen to protect her fortune.

“Martin and Heidi had a huge fight after she said she probably wouldn’t get married again,” a source told American tabloid the National Enquirer.

“But Heidi doesn’t want to lose Martin because she loves him, and so do her kids.”

Heidi, 40, and Martin, 45, have exchanged gold “promise” rings, but sources say Heidi won’t walk down the aisle a third time unless Martin signs a strict agreement to keep him from touching a penny of her $70 million fortune.

“That’s all held in trust for her family,” said the insider.

Heidi has a daughter, Leni, 9, from a previous relationship, and Henry, 7, Johan, 6, and Lou, 3, with ex-husband Seal.

“Heidi’s not stupid. There’s no way she’s going to let a bodyguard sweep her off her feet and then clean out her bank account,” said the source.