Plus, Liam had his brawls-he-couldn't-be-sure-to-win in real life, as a brash, irritable young idiot. What would be new in trying to best the slayer, one possibly boring girl in all the world whose only purpose was to fight back and kill him (and might succeed) and wouldn't care about his new-found wonderfulness as a torture-obsessed, skillfully sadistic scourge who was not dependent on brute force any more? William was a shy, repressed sissy, of course to him fighting THE big fish in the pond (and with luck able to do so) would be the new exiting thing.