Hi i'm looking to read some fics where Buffy and Spike are best friends and Buffy is in a serious relationship or getting married to some one else. It would cause tension/confrontation between Buffy and Spike because they really love each other.... Spuffy ending of course

I love this one. It's complete.
http://spikeluver.com/SpuffyRealm/viewstory.php?sid=20128&warning=NC-17

Summary: Buffy and Spike are best of friends since childhood. Spike's secretly in love with Buffy, but his fear of losing her friendship had compelled him to keep mum about it . Despite his daily dose torment of keeping it platonic between them, he was content for a while until the day came that Buffy got engaged to Riley Finn.

Dorian's Kitten's "A Way To You" has just updated, and it started that way. It's quite good.

-- caia