Shia LaBeouf Breakup: Actor Splits from Girlfriend Karolyn Pho after Two Years, Now Dating 'Nymphomaniac' Co-Star Mia Goth?

Reports confirm that actor Shia LaBeouf has broken up with his girlfriend of two years, Karolyn Pho. While the 26-year-old "Disturbia" star quietly split with the stylist/designer quite some time ago, rumors have it that he's already cozying up to his "Nymphomaniac" co-star Mia Goth. The two met on the set of Lars von Trier's upcoming film, and got close pretty quick. So right when LaBeouf is officially back on the dating market, is it true that he's already dating the cute 19-year-old dirty blonde?

LaBeouf first met Pho in early 2011 at a karaoke club in L.A.'s Echo Park - the duo started dating, and the "Transformers" actor has credited Pho for helping him "grow up." According to an inside source at Us Weekly, the young couple quietly broke things off "a while ago" - LaBeouf was actually spotted cozying up to a mystery blonde at L.A.'s Magic Castle on Saturday (Nov. 24). Now rumors have it that he and Goth have been spending ample time together in the past few weeks.

According to another inside source at Radar Online, "He got to know Mia on set and quickly became enamored of her. They have similar interests, they love alternative music, thrift stores and she is edgy and funny, which Shia loves." The "Nymphomaniac" co-stars were actually spotted together on Wednesday, Nov 21 on a low-key Starbucks date in L.A. Apparently the duo are already pretty serious - the source continues, "They've kept their relationship under wraps, but they pretty much started dating after he broke off things with Karolyn a few months ago."

Reports allege that LaBeouf's relationship with Pho had been on the rocks ever since he decided to take on a lead role in the major pornographic drama film. The same inside Us Weekly source told the magazine back in August, "Karolyn doesn't want him having sex with somebody else - simple. She's begged Shia to ask Lars if it's possible to make the scenes appear real, rather than shoot them real..." Another source told Radar Online at the time, "Karolyn gets that Shia likes to go method and appreciates his artistic integrity. However, she thinks performing a real sex scene in a movie is going too far. It's difficult for her to understand why it can't be simulated - just like in other films."

Maybe Pho officially had enough when LaBeouf recently joked to television host Chelsea Handler, "I sent [Lars von Trier] videotapes of me and my girlfriend having sex, and that's how I got the job."

And as for LaBeouf and Goth's blossoming relationship - "They're already spending a lot of time together, not just with work, but also have been hitting the town. Mia has made Shia very happy and he's certainly found a party buddy for the time being."