All My Loving, 2:07
"You're going to Europe?"
Casey promptly locks herself in the bathroom after Derek's little announcement.
"C'mon, baby."
"Don't baby me! I'm your sister."
"Step-sister."
"Just go, Derek."
"No! You're always telling me to work harder, take advantage of all the things at Queens. Now that I have, you're mad at me!"
"I'm telling you to go!"
"Since when have I done what you told me?"
"Never."
"Yeah. That's a hint."
"I thought we were…"
"We were!"
"No, we weren't. We aren't. It's..."
Derek growls, and slides his student ID beside the lock. Casey continues her rant, and the lock clicks open.
"…our parents are downstairs. And, don't get me started on Simon!"
He opens the door, not surprised to find her pacing back and forth.
"Der-ek!"
He laughs. "I'm sorry I'm going to be gone for nine long weeks. I'm even sorry that I have to leave after saying this: I. Love. You."
She stops, and stares at him. "I… love you too, Derek. I…have. For a while."
"I know. I've said it before too. I think I always will. I'll write you, every day. I'll tell you I love you every single day, because it's true."
"Promise?"
"Only if you promise to write back."
"Every day."