I am a HUGE fan of PM Dawn. My favorite is definitely I'd Die Without You, but this one runs a close second.
Set Adrift On Memory Bliss, PM Dawn
My teaser is longer than two sentences, but I really thought this passage was beautiful and sad.
"I took the book from Imogen and held it up to my face. The dust stung my nose. The aroma was salty and a bit sour. The cover of the book was disintegrating. There hadn't been new books printed (on account of the cost of paper) for as long as I had been alive, maybe longer. Nana once told me that when she was a girl there used to be huge stores filled with paper books."
All These Things I've Done