Shia LaBeouf and Carey Mulligan's relationship has become the latest Hollywood casualty, PEOPLE reports. Despite the recent announcement of the split, a source tells the magazine the two ended their relationship "some time ago." The couple, who began dating in 2009, starred together in September's 'Wall Street: Money Never Sleeps'.

Oliver Stone, who directed the couple in the 'Wall Street' sequel, noticed the couple's attraction on set as soon as filming began, according to the New York Post. "You could see their chemistry right away, and it was pretty powerful. There was no mistaking what was happening," he said.

Michael Douglas, who won an Oscar for his portrayal of Gordon Gekko in 1987's 'Wall Street' and played Mulligan's father in the sequel, warned LaBeouf about the perils of dating his co-star.

After the couple went public, Douglas told Extra, "I said that's a dangerous way to go, [but] they're here and happily ever after, so it's very nice to see."