You know you're dating a great guy if he agrees to go to a Taylor Swift concert with you, but you're dating the perfect guy if he has a favorite T-Swizzle song and knows the lyrics.

If I asked my husband to sing a Taylor Swift song I guarantee he would sing "Shake It Off", I mean, who doesn't know the lyrics to "Shake It Off"? Is it safe to say that "Shake It Off" is a T-Swizzle classic? I think it's a big enough song to be considered a classic, so I'm going to go ahead and start referring to it as such.

People. com stopped by Taylor Swift's 1989 World Tour in New Jersey for a little #TAYLORgating before the show. They put Swiftie fans boyfriends to the ultimate Tay Tay test and asked them to sing their favorite Taylor song and they did surprisingly well! I should rephrase that, most of them did surprisingly well -- one boyfriend sang his favorite song "Blank Slate", aka "Blank Space", but, hey, nobody's perfect.

But, real talk, if you meet a guy who says he doesn't know any Taylor Swift songs run, don't walk, in the opposite direction, he is not worth your time.