The New York Post is reporting that Ashley Olsen is dating the eccentric and sometimes jerky Jason Bartha.  Bartha is best known for his supporting role in the movie National Treasure.

“He’s a little bit psycho-y,” said one source who knows Bartha. “He’s a really cute, nice guy, but he was always jumping out of the shot when Lydia Hearst [Bartha's former girlfriend of a year] was being photographed.

“It’s a little strange that he would go after a girl [Olsen] who is always having her photo taken,” the source added.

We’re told that after Hearst ended her relationship with Bartha, “he didn’t take it well” and even went so far as to “scream at her and call her a bitch” at an Oscar party this year.

Bartha must be one really weird dude considering Olsen is one of the most weird creatures this side of an Ewok.