AceShowbiz -

The on-off romance of Ryan Gosling and Rachel McAdams is off again. The celebrity couple reportedly breaks up after just a few months reconciling their broken love relationship.

Ryan and Rachel were co-stars in the 2004 drama flick "The Notebook". Playing on-screen lovers in the big screen movie, they quickly embarked on an off-screen romance. Unfortunately, the two split back in 2007, giving no single clue on why they decided to go separate ways.

In late July 2008, rumors were mounting that they rekindled their romance after Rachel was seen attending Ryan's DJ debut at Green Door lounge in Hollywood and having a chit chat with him while he was away from the deejay stand. Amidst speculation on that matter, the stars were photographed getting up close and personal, kissing and feeding each other during a breakfast near the actress' home in Toronto, Canada on August 21. Their public display of affection, thus, confirmed the mounting rumors that they have gotten back together.

Concerning their latest separation, a source tells US Weekly, "Rachel is too controlling. They broke up the first time because of their busy schedules - and that's the problem again." While there have yet words from either parties, Ryan is reported to have been seen with another woman a few weeks ago at the UCB theater in N.Y.C.