I'm wondering if there are any fics where Buffy is innocent/significantly younger and Spike is older/bad. Human or supernatural, it doesn't matter.
Links if possible, please

Here's some I really liked. I included two WIPs because I liked them so much and they fit the criteria. Have fun!

Playing on the Dark Side by pj

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=10189&warning=NC-17

Summary: When Buffy's mother dies suddenly, she withdraws from her friends and family, and runs away from home. Venturing the streets of L.A. by herself, she is abducted by a gang when she accidentally interferes in their business. Buffy finds herself in the middle of a cruel life, where violence and rape aren't given a second thought. Can Spike save her from this life...or can she save him? A story about rape, whether redemption is even possible, and whether love can triumph from it. WIP




The Trouble With Keeping Promises by Jaesha

http://dark-solace.org/elysian/viewstory.php?sid=1781

Summary: Buffy Summer-Giles loses everything to a horrible accident and is sent to a cruel, uncaring father. Can a promise save her? WIP





Whiskey and Wine by Mrs Muir

http://dark-solace.org/elysian/viewstory.php?sid=453&warning=NC-17

Summary: Once upon a time in Sunnydale there was a port that served a hundred ships a day. Spike was a lonely sailor passing the time away. Buffy worked laying whiskey down and loves the lonely sailor. Will she steal his heart away or end up alone when he returns to his life, his lover, and lady the sea.




Black Silk by Nicky

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=4704

Summary: At a sleep-over, 15-year-old Buffy is dared to sneak into Cordy's step-brother's bedroom and steal a pair of boxers from his drawer – but Spike comes home early, and Buffy gets a lot more than she bargained for. (Warning: underage sex.)



Little London by caatje

http://www.fanfiction.net/s/3159257/1/Little_London

Summary: AU Story. 24 year old virgin, Buffy, never had a boyfriend and is shy around men. Not knowing how to act around them or to get their attention. Spike's your typical 'bad boy' though soft on the inside. He owns a bar where Buffy and her friends have been coming to the last two weeks.

A Self Portrait by PsychoPromQueen7. Here at SR.

Winter's Storm by greyangel. Available at Sinister Attraction.

Twenty One by peroxidelove/lovesperoxide.