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We caught up with Pete Wentz as he toted adorable son Bronx to the Beverly Center mall in LA, and we must admit the rocker looks a lot happier since splitting with ex-wife/baby mama, Ashlee Simpson.

The Fall Out Boy bassist has been celebrating his newfound freedom partying it up with his band The Black Cards in NYC, while also meeting up with former flame Michelle Trachtenberg -- and countless other hotties.

But Miss Simpson isn't sitting at home alone! The singer has also moved on, and has recently been spotted getting cozy with sexy Boardwalk Empire star Vincent Piazza. The pair couldn't keep their hands off each other on a recent trip to NYC, and even shared a very public kiss on the street in Manhattan.

It looks like Ash and Pete are officially done!