"American Idol" winner David Cook and "Idol" alum Kimberly Caldwell are taking their new relationship to another level - up in the private Baseline Box seats at last Tuesday's Dodgers game.

Caldwell performed the National Anthem at the game. Other than that, the two managed to escape being shown on the Dodger Vision video board.

"Kimberly was definitely nervous about the public appearance! They were really cute and sweet together, laughing and having a lot fun," a source told Usmagazine.com.

The same source said Caldwell was concerned about her her "boyfriend's" privacy.

Cook first asked Caldwell out on a date on live national TV the same week he won "American Idol."

Whether or not the two are a couple remains to be seen.

"We went on a date. It was nice. We'll see what happens," he recently told People.

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