Why Jennifer Lopez Cried at Her Concert

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 Jeff Kravitz/FilmMagic

Big girls do cry — just ask Jennifer Lopez, who burst into tears during a Saturday concert at Mohegan Sun in Montville, Conn.

With thousands of adoring fans looking on, the newly-single mom got emotional during a love song montage that paid tribute to three of her most high-profile romances; with male dancers playing the parts of exes Diddy, Ben Affleck and Marc Anthony, Lopez, 42, teared up during what she called a "trip down memory lane."

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Why the waterworks, exactly?

"It was the Marc part of the montage which choked her up," a Lopez source explains to Us Weekly of Anthony, 43. She and the father to her twins Max and Emme, 2, announced the end of their 7-year marriage in July. "She can't help but feel sad over the loss of a marriage that went on for so long. She's emotional about the whole thing still."

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"Part of her dislikes him so much," the source admits. "But another part still loves him in a way, he's the father of her children. It's confusing. She's going through a whole array of emotions right now."

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Complicating matters even more, perhaps, is Bradley Cooper, whom Lopez recently began seeing after he pursued her for months. Although the 36-year-old Limitless star treated Lopez to a luxe meal at NYC's Per Se in early September, flew to Boca Raton, Fla. to be with her later that month and was spotted exiting his L.A.-area home in early September, he wasn't in the audience for Saturday's teary performance.

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