I'm looking for some fics were Buffy drinks Spikes blood but is still human. Also the less angst the better.

There is a claiming, non siring in Unexpected by passion4spike but it isn't fluffy

They claim each other and drink blood from each other to do it in this fic.

Buffy isn't turned.

Accidentally Yours by _3xy_

http://dark-solace.org/elysian/viewstory.php?sid=2473&warning=NC-17

Summary: Buffy and Spike accidentally claim each other. Starts from the end of "Lover's Walk".
Categories: Episode Rewrite, Season 3, Claim Characters: Ensemble
Genres: Fluffy/Comedy, Romance Warnings: Adult Language, Sexual Situations

Thanks for the suggestions, I'm looking for something like Duty or Destiny? by Tasha.

Never read that, but...

Imitation of a Man by darkapple (can be found on LJ)
The events of "Dead Things" plunge Buffy and Spike into Spike's human past in an
experience that transforms their relationship. The action begins with Buffy's return
to the police station alley where, minutes before, she left Spike beaten and bloody.

Much angst, though.

There's Destined by dampersandspoons.
Destiny by spikelissa. So far thats all ive seen with destiny in the title in any firm. Hope it helps.

I was also able to find Duty or Destiny by Tasha.

Old Friend, Long Gone by Darkrivertempest
Summary: AU season 6, post "Flooded." After being ripped from Heaven, Buffy is unsure of herself and her duty as the Slayer, especially where a certain vampire is concerned. Try as hard as she might, Buffy is just not dealing well with life after death, the second time around. But someone is watching over her, leaving a clue that will lead to her acceptance of a happy life with the vampire that kept his promises.