Ashley Olsen, 24, and her Hangover star beau, Justin Bartha, 32, have parted ways, a source confirms to PEOPLE.

The private couple, who dated for more than two years, shot down engagement rumors shortly after they got together in 2008.

Reps had no comment.

Source

Ashley Olsen (in sunglasses) stepped out last night in support of her fiance, Justin Bartha at the premiere of his new movie Holy Rollers in NYC.  Mary-Kate arrived solo following her split from boyfriend Nate Lowman earlier this year. The twins are huge supporters of Justin, showing up at all his movie premieres, and recently at his Broadway debut.

Holy Rollers is a true story of a young Hasidic man who was lured into the world of international drug trafficking in the late 90s.

Fame

“The Hangover” Star Justin Bartha strolls through the streets of Park City, Utah while in town for the Sundance Film Festival on January 25, 2010.

Fame Pictures

Fame

I’m so excited to see this movie! I’m seeing it on Saturday (which is also my birthday!).  Let’s not talk about how old I’ll be.  We’ll call it 25 and be good.

Pictured: Bradley Cooper, Ashley Olsen, Justin Bartha (Ashley Olsen’s bf & star of the movie),  Jason Bateman & wife, Kristen Bell, Zach Efron (get a haircut already!), Heather  Graham, Danny Masterson, Eva Mendes, Mary Kate Olsen, Audrina Patridge, Jeremy Piven, Jamie Lynn Sigler & bf, Kate Walsh and Kendra Wilkinson!

Bauer Griffin

You might recognize Justin from movies such as National Treasure or Failure to Launch.

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