DARREN: Putting us out? Today you are the Springsteen family’s raison d’être.
Raison d’être: French expression commonly used in English, meaning “reason for being”. Darren is saying that just for today, his family only exist to get to know Rory and assist her.
Darren Springsteen is portrayed by Granville Van Deusen, who, amongst other roles, played Keith Dennison on soap opera The Young and the Restless from 1997 to 2001.