I saw a video on much about a couple vampires and i cant remember the name of the song?

OK so anyone who watches much video flow or much countdown might be able to help me...i saw a music video about a couple of guys and i think they were following a girl..they kept disappearing and i know the song name or artist had something to do with a vampire ...i cant remember the name of the song or the artist but really want to find the song can you please help me?