As first reported by Perez Hilton, Jess and John have indeed split. TMZ cameras caught a solo Mayer at NYC hotspot Stereo last night, looking just fine on his own. Get in line ladies, he's single again.
As for the reason for the, er, bustup, a rep for John refused to comment on the Grammy winner's personal life, as did Jess' rep.
Could it be because he's on the Time 100 Most Influential list having conversations with presidential hopeful John Edwards while she's pushing her hair extensions? Hmmm...
Some things just weren't meant to last.