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John Mayer, Katy Perry

SPW/Splash News

Katy Perry and John Mayer make one cute couple!

On Thursday, the twosome celebrated Valentine's Day with a romantic dinner date in Los Angeles.

Perry, 28, stunned in a floor-length white-and-red dress. Mayer, 35, looked a bit more casual in slacks and a denim coat, but he threw on a festive red-and-blue scarf for good measure. Adorably, the duo held hands as they exited the restaurant.

But Mayer is not the only love in his gal pal's life.

The "Wide Awake" singer tweeted a cute V-Day picture of her grandma's "wild" first manicure. She also tweeted a sweet "Happy Thursday everyone!"

Looks like Perry had a happy Thursday, too!