For someone who described herself as a "homebody" when she was married to Brad Pitt, actress Jennifer Aniston sure has managed to do some globetrotting with her current man, singer John Mayer.

Last week, she tagged along as he played shows in England, and there she was by his side again last night as he kick-started his US tour in Milwaukee, Wisconsin.

Mayerston, who OK! readers named the Hottest New Couple of the Year So Far in our latest poll, arrived in Wisconsin yesterday so John could perform at the annual Summerfest concert festival, which continues on through July 6.

"They were really lovey-dovey before the show," one festival insider tells OK! about the couple. "They seemed really relaxed and didn’t care that everyone was looking out of the corner of their eyes at them."

But no matter how comfortable they were together backstage, John refused to even acknowledge cat calls from the audience to "Bring Jen out!"

John’s tour bus is currently heading south from Milwaukee to St. Louis, where the singer is set to perform tonight before moving on to Noblesville, Indiana, for the Fourth of July concert there.

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