oh, they had no idea. >> coming up, police look at the men in lauren's life. her boyfriend david, and her ex, joe. they wondered, could there have been a love triangle gone wrong? >> people react badly to that sort of thing? >> very badly, sometimes. >> when dateline continues. multi-flex, huh? wow. it becomes a step. mom, dad's flexing again. that's not all. you can extend the bed for longer stuff. is he still... still flexing. that's right! and, it becomes a workspace... you can put your laptop here. i'm sending an imaginay email. hey dad, dinner! hey! look who stopped by daddy's office. wait, you work here? the chevy silverado with the available multi-flex tailgate. find new flexibility. find new roads. chevrolet.