"Maybe I know somewhere
deep in my soul
that love never lasts.
And we've got to find other ways
to make it alone.
Or keep a straight face.
And I've always lived like this
keeping a comfortable distance.
And up until now I've sworn to myself
that I'm content with loneliness."

("The Only Exception" by Paramore)

She listens to Hayley sing how she's trying to protect herself from the hurt she witnessed as a child. The verse tugs at her heart with strings of truth.  She finds herself putting up walls that are constantly torn down. They aren't assembled well. It's like she's thrown sticks of wood together to form a mini-barricade that blow away in the slightest wind. She can't stop herself from feeling.  From feeling anything. Love. Bitterness. Joy. Bliss. Anger. Hurt. Pain.

Don't get her wrong; most of her life is happy. She's grateful for what she has, but sometimes little things hurt so badly that she wishes she was calloused again.  It's no way to live, though--calloused. It eats away your soul and destroys everything lovely. It ruins relationships and hurts others. 

She tries to convince herself that she's content with the loneliness of her empty home, but her heart can't bear the weight of missing him so much...