I read this fic years ago and i can't find it anywhere. It an AH fic where Buffy and Spike are best friends and she is about to get married to Angel or Riley can't remember which one. Anyway its the night before her wedding i think and she comes to see Spike panicked because she is a virgin and she is afraid of being "bad" in bed and some how they end up sleeping together i think she asks his to not 100% sure thought. In the end he makes it clear she is his and he proposes i think and she accepts.... Pretty sure it was a one shot too.

Any ideas?