Why Kim Kardashian Skipped Valentine’s Day With Kris Humphries

 Kevin Mazur/WireImage for NPG Records 2011

So much for romance.

Instead of spending Valentine's Day on a romantic date with NBA player Kris Humphries, E! reality star Kim Kardashian was on the other side of the country making a club appearance.

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"We already did our Valentine's Day," she told UsMagazine.com at Marquee in Las Vegas Monday. "Because he's working and I'm out here, it's been an all-girls Valentine's Day so far — it's kind of perfect!"

After all, the 30-year-old Kourtney and Kim Take New York star — who walked the Grammy Awards red carpet with her brother Rob — knows how demanding work can be.

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"I think, if anything, I understand work more than anyone, so that's the most important thing," she said. "Holidays are great, but as long as you set aside that time, whether it's that actual day or not, I think that's what makes relationships work."

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What makes her long-distance relationship with the 26-year-old New Jersey Nets athlete worth it? "

So many things. He just has a really good heart," she told Us. "There has to be trust and honesty and chemistry. If you don't have any of those, it's never going to work."

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