Showing Bite Me: A Love Story by Christopher Moore

While some lovers were born to run, Jody and Tommy were born to bite. Well, reborn, that is, now that they're vampires. Good thing theirs is an undying love, since their Goth Girl Friday, Abby Normal, has imprisoned them in a bronze statue. Abby is keen to be one of the undead, too, but first she and her PhD-candidate boyfriend Steve have to deal with the huge vampire cat, Chet, who is stalking the city - and creating his own minions.

And then Jody and Tommy free themselves from the statue and they are NOT happy...