I need a good supernatural anime/manga good girl-bad boy?

Death Note is the one I'm thinking about right now. Misa is really head over heels for Light. She's a good girl, but she's just too blind to see the error of her ways because she wants to impress Light so much and earn his love. Light on the other hand, well, it's no question he turned out being a bad guy. The anime is really good, but it doesn't really have romance in it.