
Seriously, whatever you do, don't dump her. At least don't do it without any rhyme or reason. You can expect a full 3-4 minutes about this.
Yup, don't be wishy-washy about things.
Actually, you can dump her. Just don't cheat on her, because this is way worse. Expect to find yourself in an entire album if you do this.
Don't drop the bomb on her. Taylor is actually a good girlfriend. So it's still a mystery why people wouldn't want to date her. If you want to break up with her, do it really, really slow. Like slowly lifting a band-aid off.
Maybe, she'll apologize to you someday in song.