See which A-list twosomes sparked a romance as cameras rolled
Blake Lively and Penn Badgley
Costars and one-time on-screen love interests, Lively and Badgley met on the set of Gossip Girl in 2007. "We have an unbelievable trust and such a healthy relationship," Badgley told Us of his bond with Lively.
Credit: Jamie McCarthy/WireImage.com for Gabrielle's Angel Foundation