The Audrina Patridge/Benji Madden rumors have turned out to be a bust…but we have photographic proof that BM hooked up with Katy Perry over the weekend.

Following her Valentine’s show at Hard Rock Hotel’s Wasted Space, Perry, 24, and Madden, 29, headed to Lavo – where the two conspicuously cuddled throughout the night, later prompting one observer to sense “some chemistry there.”

Madden, in town to deejay, even danced for Perry during several songs – and at those rare times when their hands weren’t on each other’s legs.

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