I Will Remember You
Buffy arrives in Los Angeles, angry that Angel has been spying on her. When a demon attacks the pair, Angel is infected with its blood and finds that he has become human.
Fun, frolics and ice cream with Buffy ensue, until Angel realises that he's no good in the fight against evil whilst he remains mortal.
Much to Buffy's horror, he finds a way to change history and remain a vampire.