Is Jennifer Lopez having second thoughts about an old flame? That's what everyone is talking about as apparently the singer and actress was caught flirting with her ex-boyfriend Diddy at the American Music Awards on Sunday night in Los Angeles.

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Even though Lopez is supposedly engaged to her on-again, off-again boyfriend Casper Smart, she apparently loved all the attention she was getting from Diddy after giving one of the sexiest performances of the night.

According to Gossip Cop on Monday, reports indicate that Lopez might have had one too many drinks during a post-show party, and that's when she started heavily flirting with the hip-hop mogul.

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A source said, "She got extra liquored up on the champagne and cameras caught her flirting with Diddy. Her boyfriend Casper was off to the site just watching it all go down with one of his male companions."

What's more, Lopez was allegedly also flirting with young artist Shawn Mendes after a photo of the singer whispering in his ear surfaced.

Sources close to Lopez though tell Gossip Cop that the multi-talented Latina was not flirting with anyone that night and that Diddy did nothing more than give her a shout out during his presentation on the AMA stage. Lopez herself, though, has not made any comments about the rumors.

Diddy and Lopez dated for several years back in 1990s, before she married her second husband, back up dancer Chris Judd, in 2001.