Right now, Ryan Gosling is probably cursing that “crazy, stupid, love.”

Radar Online reports that he and his longtime girlfriend, Eva Mendes, are headed for a breakup.

The pair hasn’t split just yet, but a source says “there was a realization before Thanksgiving that they took things way too fast and were rushing toward a marriage that either of them particularly needed.”

If they do in fact call it quits, things could be awkward for them in 2014, as Mendes co-stars in “How to Catch a Monster,” which also doubles as Gosling’s directorial debut.

“They both know they need some kind of resolution in their relationship before they go out and promote their movie, in which Ryan directed Eva in a very big part,” one insider adds.

Their future together is up in the air, with the source adding that they could just as easily “resurface together for New Year’s.”

Gosling and Mendes were first linked together in 2011, and the “Hitch” actress publicly dismissed breakup rumors in early November.

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