Ashley Olsen, beau ‘can’t keep their hands off each other’

Washington, Sep 26 : Hollywood actress Ashley Olsen is head over heels in love with Justin Bartha â€" and she’s making it very public.

Olsen flew to Las Vegas to be with Bartha, who is filming his upcoming flick ‘The Hangover’ there.

After a romantic dinner of sashimi and soup at Stack Restaurant & Bar, Olsen and Bartha partying up a storm with friends until the early hours at the Mirage’s JET nightclub, according to Pop Tarts.