I'm trying to remember a fic that is either set during Something Blue but is one sided or involves a love spell that only affects Buffy. While she was under the spell she and Spike claim each other and the only cure for the spell is for Buffy to forget about Spike completely. The spell is cast and makes himself known to Buffy and she is drawn to him because of the claim.
The end result is that once they touch, or kiss or something intimate like that her memory of him returns completely but she is no longer affected by the spell. I'm pretty sure it is NOT Beloved in Blood by Ameeya. That was the first thing I thought of
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