specific fic: dean/castiel, cursed!castiel

[superknope]

hi! im looking for a dean/castiel fic, when the fic starts castiel had opened a box and now he and dean are having sex. castiel is not talking and just growling, i think.

sam is in the room while they have sex and on the phone with bobby trying to figure out how to break the curse. and i think he just needs to destroy the box.

i'm pretty sure this was on ao3 but i havent been able to find it.

Edit: i found it! its get a room by mayalaen