Taylor Swift and Lena Dunham are BFFs?! Who knew!? The leggy blonde made a visit to the Late Show with David Letterman to promote her new album, 1989. During the sit down, Swifty talked about the usual -- how she isn't dating (we know Taylor!), but then surprised us all when she said she and the Girls creator are best buds.

The 24-year-old songstress said she was watching an episode of the hit HBO show and went to Dunham's Twitter page where she noticed that the actress was quoting one of her songs, and then direct messaged her.

T-Swizzle says that initially she thought the quote was a joke. “She has to be doing that ironically … She’s clearly making fun of me. Cause I have like this big loser complex from school.” But in reality Dunham was quoting the songstress in earnest. The two then decided to meet, become buds and then the rest is history!

We are a little shocked that Dunham doesn't find the cat-loving, girly girl a bit annoying -- but maybe annoying birds of a feather flock together?