I'm looking for a story where Sesshoumaru gets cursed and he's slowly freezing to death. Kagome comes along and helps him by having sex with him. Been looking for this story for a while and I can't find it.

It sounds like:

Not Impervious by Oroyukae

Summary: He was supposed to be the most powerful demon in existence; one that none could best in any situation, at any time. That was not entirely accurate, it would seem. One error in judgment at the most vulnerable of times, and all that he knows lay in jeopardy. Just what would said being be willing to agree to in the direst of circumstances? {FIN}
Rating: MA - Universe: Canon - Status: Complete - Category: Chapter Stories - Genre: Angst, Drama, Erotica - Updated: 09-06-11 - Created: 05-30-11 Chapters: 38 - Reviews: 257 - Words: 147,396 - Reads: 160,299

Thank you very much.