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stands for Krazy Love Syndrome - When someone is only kind of obsessive over something, not super creepy, but crushing on someone or something. If it's two people, they are not yet in deep love, but likin eachother quite a bit.
- "Dude I think I'm starting to really like Sharla."
- "Really? Don't tell me you have KLS."
by fallio June 02, 2010
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