After celebrating her 22nd birthday weekend down in Tennessee at Bonnarroo with Mary-Kate [1], Ashley Olsen was back in New York last night finally spotted with her boyfriend. The pint-sized mogul and the guy she's been rumored to be seeing for a while, Justin Bartha (from the National Treasure [2] movies), arrived at a screening of Trumbo in Tribeca together, but still walked the red carpet separately not ready to really show off just yet. Hopefully there's nothing to the rumors about his temper [3] because Ashley seems so happy with her new man. At least he doesn't have to worry about buying her expensive jewelry, since she can just design it herself [4].

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Splash News Online [5] and Source [6]