I'm looking for a story in which Sam confesses his love for Dean, only to be abandoned by him at their motel room. Sam is broken and decides to kill himself through hypothermia. He fills the bathtub with freezing water and takes all of his clothes off, except Dean's shirt and enters the tub. He starts naming the stages of hypothermia and explains them. Just before Sam loses consciousness, Dean comes back and tells Sam that he didn't leave, he just needed some time to think and drags Sam out of the tub and then takes care of him.

Thank you in advance :)