Dangerous Spike / Vulnerable Buffy

I would love some recs of stories where Spike is a confident and dangerous vampire and Buffy is more... vulnerable. I don't mean wimpy or whiny, but not 100% confident, superior slayer who is sure Spike isn't much of a threat. Buffy could be a human, potential, or slayer(affected by poison or d*ugs or a spell or just delicious fear), but Spike should be a dangerous demon.

Bonus if Spike as a demon has some instinctive, primal responses.

Thanks a lot!

Can I Keep You by CandyNicks

Summary: Vampire Spike meets runaway Buffy on the streets of Victorian England. He takes her home fully intending to kill her after he's had his way with her, but falls in love with her instead. Buffy needs a place to hide, but will she stay once she finds out who Spike really is?.....

http://dark-solace.org/elysian/viewstory.php?sid=1756&warning=NC-17

These are all the vampire!Spike, human!Buffy fics that I've been able to find...most, if not all, still have Spike as a dangerous demon.

What about Holly's "Dreamscape?" Buffy is very vulnerable in that one and Spike is really rough on her in the beginning. It's a great fic - a little like the tables are turned in a way. Buffy has feelings for Spike, but he runs her through the ringer first.

Addie Logan's Blood and Fire is one. But it's very NC-17

The Tooth Fairy by Sotia

Just read Saber's Please Don't Go- it fits nicely.