abusive buffy towards spike

I read the fan fiction before. I think buffy was under a spell where she was very abusive to spike when around others I believe or alone. I remember towards the end they were at a hotel and buffy was in the woods when she was cured. Spike loved her but I think dawn was the only one to know how buffy treated him.

I think you're looking for Blood Bound by dreamsofspike. Buffy is horrifying in that fic.

That's it thank you!