buffy breaks up with spike because she thinks he cheated on her

buffy has short hair
she thinks spike cheated her with dru but it was a montage of dru
they are at a club and buffy see him dancing with a girl and then he leaves with her, sleep with her but afterwards they become friends. Buffy realises that he never cheated on her when she run into dru at the opera and she was clean anymore.
yeah something like that, the fic its great but i cant find it

I think I know which fic you're looking for, but I can't remember the author or title. Here are more details, in case they help someone else remember.

All human fic. Spike was Joyce's assistant at the art gallery. After Joyce's death, he and Buffy, who are a couple, run the gallery. Dru, Spike's ex and a drug addict, comes to Sunnydale after she gets out of rehab. She sets up a scenario to make it look as if Spike is cheating on Buffy with her. Buffy breaks it off with Spike without giving him a chance to explain. She also refuses to listen to Dawn, who continues to be Spike's friend. Buffy finally finds out that Spike never cheated when she runs into Dru at the opera while on a date with someone else.

Taken by jnharrow is one you are talking about.

Carrot

Guest
that's the one !
conlentesdesol