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Karina Smirnoff has found herself in a familiar position: Single.

The "Dancing With the Stars" pro is again on the market after her fiancé, Jason Adelman, called off their engagement. Jason is now the third fiancé to put a halt to marriage plans with Karina.

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The American-Ukrainian dancer was previously engaged to fellow dancer Maksim Chmerkovskiy and MLB pitcher Brad Penny, but neither resulted in a marriage.

The reason for her latest failed relationship centers largely around her career and what it entails.

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TMZ is reporting that Jason is "not accusing her of cheating, but he was uncomfortable with the way she acted around other men...especially dancers."

A source said that he and Karina have "different family values."

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Karina's rep, however, says that Jason's implication that dancers lead sexually charged lives is "disrespectful and insulting to the entire dance community." Her rep added that Jason's assertions are "nothing less than an attempted smear campaign from a malicious person."

The third time is not the charm.