I don't remember the title or author, but I can give a few more bits of the story, if that will help. It happens after Not Fade Away. Angel, Nina, Spike, and Illyria attend a party at the Wolfram and Hart offices in Rome, with Spike and Illyria attending as a couple. While there, Giles is shot--I believe it was in revenge for Wesley dying in LA, after Giles would not send help. Buffy, the Immortal, and Willow are there; Buffy is happy to see Spike is alive, and upset that he won't acknowledge her. Later, the Immortal tries to sweet-talk and bribe Angel into giving him some of the energy he took from the Senior Partners when he bit Hamilton. He needs this energy because without the power he received from the Senior Partners, he is no longer Immortal. Finally, Spike and Buffy make up. In the end, Willow is left eating ziti with John Cusak in Rome. | 
