Now that Jillian Michaels is finally engaged to her longtime love, Heidi Rhoades, is she having second thoughts about their relationship? That might be the case as there's a new report that says the reality television star is demanding that her fiancé sign a prenup before they even set a wedding date.

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According to Celebrity Dirty Laundry on Sunday, critics can't help but wonder if Jillian and Heidi have what it takes to make a marriage work as the fitness world superstar has even voiced her doubts in the past.

Blogger Grace Gerard notes that Jillian might be worried that she has millions of dollars at stake as she was even once quoted as saying, "I don't know what scares me more - having another kid or getting married."

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What's more, not much is known about Heidi other than she's a stay-at-home mom to the couple's two younger children and that she might not have any stable income of her own.

Gerard writes, "But will it be fun when it comes time to sit down and talk money before the wedding? If Jillian Michaels and Heidi Rhoades were to split how much money would Jillian have to shell out to Heidi? Spousal support? Child support? A giant chunk of the millions of dollars Michaels has earned before and after marrying Rhoades? Will Jillian and Heidi even make it down the aisle?"

So far, Jillian herself has not made any comments about the speculation, nor has she said anything about a wedding date, either.

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Tags: Jillian Michaels