He looked at Aziraphale with his glasses off, a show of vulnerability to the person he wanted to spend the rest of eternity with.
"You can't leave this bookshop" he whispered, hoping, for somebody's sake praying that he'd agree and realize the mistake he was making. He couldn't leave his vast collection of first and only additions
He couldn't leave his records or his personal affects. But most importantly he couldn't leave Crowley, who had been just as much a part of the bookshop since opening day as a demon could have been with an angel throughout the years. He couldn't leave the bookshop because that meant if he could so easily leave behind his most prized possession then there was nothing keeping him from abandoning his partner of 6000 years.
"Oh Crowley, nothing lasts forever"
And he was right, it was nothing, as he'd said before the beginning, 6000 years was nothing. Barely enough time for the stars to form much less warm up.
But more importantly it was that the demon was nothing to him, even after all they'd been through, he'd realized as he tilted his head back with tears in his eyes. A feeling of sadness, a feeling he'd only ever had once before in the midst of a burning bookshop.






