October - December 2009 (Back To December)
Actor of the Twilight Saga and Taylor's Valentine’s Day co-star Taylor Lautner began their relationship in October after filming. Tay-squared was first linked while filming the movie. Swift and Lautner both alluded to their relationship during separate gigs hosting Saturday Night Live. The ballad Back To December was Swift’s first ever apology to a past flame. She later sang a mash-up of Back To December and One Republic's Apologize at the 2010 AMA’s.