Just when everyone was getting excited about how long Jake Gyllenhaal and Taylor Swift would last as a couple come reports that they are no longer together.

According to People, Gyllenhaal and Swift have not been together for quite some time. "They're over," a source told the mag about the short-lived relationship. "It ended last month."

Gyllenhaal and Swift started the rumor mill churning with whispers of their romance back in October, when they both showed up to support pal Emma Stone when she hosted "Saturday Night Live." After that, the lovebirds were spotted together in Brooklyn then laughing and getting ice cream sundaes in Big Sur, California.

Things heated up in the media when reports surfaced that Gyllenhaal had allegedly dropped $150,000 to fly swift to the U.K. to hang out with him while he promoted "Love & Other Drugs." Then, at Thanksgiving, "Jaylor" reportedly spent the holiday with Gyllenhaal's sister, Maggie, and her husband, Peter Sarsgaard.

Despite all the reports of the pair having been seen together, taking trips, etc., neither Swift nor Gyllenhaal ever commented on the supposed romance. The most we got from the country star was that her rumored boyfriend's latest movie "Love & Other Drugs" was "good." "I write in great detail about my personal life," she told Entertainment Weekly. "But I don't talk about it."

If "Swiftenhaal" are indeed no more, perhaps the actor and pop star are the first victims of the predicted fallout from "mistletoe syndrome," a phenomenon that occurs from roughly November through February, often brought on by the warm fuzzy feelings surrounding the holidays.