No.
You
don't love Christina Perri
if the
only song you know is Jar of Hearts
You
don't love Owl City if the only song you know
is Fireflies
You
don't love One Direction
if the
only song you know is What Makes you
Beautiful
You
don't love Carly Rae Jepson
if the
only song you know is Call Me Maybe
Knowing one song doesn't make you
their biggest fan.
You don't love cher Lloyd if the ony song you know is want u back.
Hello Seattle
Stole My Heart
Good Time
I can name more too :D
so what I say to people is
You don't Love Taylor Swift if the only song you know is You belong with me