TV and Movies·Posted on Sep 22, 2015What The Hell Was Happening On "Life With Derek"?What kind of relationship did Derek and Casey have?by Sydney ScottBuzzFeed StaffLinkFacebookPinterestTwitterMail Ok, so we really need to talk about Life With Derek. View this post on Like, wtf was Casey and Derek's relationship? View this post on At times it seemed like they were just step-siblings doing shit step-siblings do. View this post on And sometimes it would get real Clueless. View this post on Tap to play GIF Tap to play GIF It was rumored that the actors playing Casey and Derek, Ashley Leggat and Michael Seater, were dating. But those rumors were shot down. View this post on And people really had a lot of feelings about it. So why was the energy between them so weird? Tap to play GIF Tap to play GIF Whatever, maybe I'm wrong. Maybe Casey and Derek were just two innocent teens trying to figure out this whole sibling thing.