Ok, this is a tough one, cause I'm after contemporary books - romances - where the main hero is an assassin/hitman or very much of an anti-hero. It's much easier to find "good bad guys" in paranormals, but I'm interested in the books that are happening nowadays. There's a lot of books where those heroes are working for some government agency, where they are SEALs, black ops and alike, but I can't find good ones with "good bad guys", i.e. guys that will like the heroine and decide to stay with her against all odds. The closest I could find so far were Jennifer Crusie's Agnes and the Hitman and Anne Stuart's Black Ice, but even in them, heroes were working for some kind of (more or less) good guys. Can you help me find more of the books with gun-happy (anti)heroes, and if they have sense of humor, even better?