Jr Ward's Black Dagger Brotherhood is awesome, Kresley Cole's Arcana Chronicles, also really great-young adult actually, but enjoyable for all ages. Also KMM's Fever series, one of my favorite series of all time.

This site has a ton of books you can read for free. The Fever series is on it :)
http://www.freevampirenovels.com/authors/Karen_Marie_Moning.html