Jen and John Back Together? Say What?

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After a whirlwind summer romance that resulted in a very public he-said, she-said break-up played out in the tabs, Jennifer Aniston and John Mayer are apparently back together!

Star reports that after months of John sending Jen sappy love e-mails, Jen finally decided to give in.

According to an "insider", "at first Jennifer was afraid to respond to John's messages because she was afraid he'd break her heart again. The emails were especially poetic -- like love songs. He said he'd never stop loving her and he's been very, very persuasive."

The pair reunited with her younger guy in New York, where Jen was promoting her new perfume (what!?!). But yesterday, the pair flew back to Los Angeles together, where they were spotted being "openly affectionate, touching each other and even sharing a kiss."

We're not even sure if this is for real, but it IS kind of suspicious that just when everyone is talking about the "private photos" of the Brangelina brood, suddenly Jen's back with her ex, huh?