So many questions, so little time. When did Mischa Barton become so blond? Why does she have a hippie headband on? Where in the world did she get those crazy clothes? But the most pressing question remains: Who is that new guy she’s making out with?

This isn’t the first time we’ve spotted the duo out and about — they went to Chateau Marmont together on February 19 — but this full-on PDA-palooza pretty much cements Mr. Mysterious as Mischa’s main man.

Kudos, Mischa, way better looking than Cisco Adler — from head to… toe. - Source.

Apparently the guy that Mischa is with, is a member of 'Rooney' - If you don't know who that is, it's the band which performed in the season 1 episode "The Third Wheel".