An eternity of isolation is what he had planned for. Not a single person would ever desire such a fate, not even him. So when he awoke to the familiar sight of you brushing away his hair in the mirage he made to keep his humanity. His plans crumbled faster than coarse sand.

He swore he'd never forgive himself if he took away your future, even if deep down, his most selfish desire was to keep you beside him in his eternity. So he said his goodbyes without looking back, ~~he definitely did,~~ telling you to forget about him.

So of course the only other logical plan of action you made was to shatter space and time to get Clarence out of what was essentially an eternal afterlife. You ripped apart the decayed dimension he was trapped within and pulled him back into the world of the living. Now he spent his eternity with you.

You gave him a future within yours.