Taylor Swift - Christmases When You Were Mine Lyrics Meaning

(Please take down the mistletoe, because I don't wanna think about that right now.) She is sad because her boyfriend isn't with her on Christmas and it's a change for her.
(Cause everything I want is miles away,In a snow covered little town) All she wants for Christmas is her ex.
(Mama's in the kitchen worrying about me, Seasons greetings hope you're well, I'm doing alright if you were wondering, Lately I can never tell) Her mom knows something is wrong. She still wants what is best for him. She can't really guage him anymore.
(I know this shouldn't be a lonely time, But there were Christmases when you were mine) She wants to be happy, but she can't.
(I've been doing fine without you, really, Up until the nights got cold) She was doing fine until memories came back.
(Everybody's here except you, baby, Seems like everyone's got someone to hold) Everyone has their match, but she doesn't.
(But for me it's just a lonely time, Cause there were Christmases when you were mine) She wanta him there with her.
(Merry Christmas everybody, That'll have to be something I just say this year) She is kind of emotionless.
(Bet you got your mom another sweater, Were your cousins late again?) She knew him so well.
(When you were putting up the lights this year, Did you notice one less pair of hands?) It was tradition to put up lights together.
(I know this shouldn't be a lonely time, But there were Christmases when I didn't, Wonder how you are tonight, Cause there were Christmases when you were mine) She is thinking "I wonder what he is doing right now." In years past she didn't, because he was right there beside her