(Yahoo!) - It was a "Diamonds and Pearls" kind of night for on-again lovebirds Robert Pattinson and Kristen Stewart. No, they weren't shopping for engagement rings or anything 'Twi'-hards might start screaming over. They were on a date — at a Prince show.

The concert was an intimate affair. For the second time this week, the pint-sized performer held a "secret show" at The Sayers Club in Hollywood. RPattz, 26, and 22-year-old KStew — back together after going their separate ways last week to promote "The Twilight Saga: Breaking Dawn - Part 2" — were among the first to arrive at the venue Thursday night and the last to leave in the wee hours of the morning, reports People magazine. While they were at the club, they sipped beers and chatted with friends. Throughout Prince's performance they were attached at the hip — literally. "He was behind her — holding her around her hips," a source told People. "They were sweetly affectionate and tender."

When they headed home after the show — perhaps to Stewart's new $2.195 million mansion in the L.A. enclave of Los Feliz — they weren't as affectionate and tender with the waiting paparazzi. They ducked down in the car as they drove off. But nice try, you crazy kids — we still saw ya.

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