Wow, I think we are watching two different shows. Yes, Daryl cares for Laurent, but Laurent is not the end-all, be-all for Daryl, he's just another brick in the wall. And the song - the 'get what you need' - his need was Carol. So Daryl may have thought his life was heading in one direction with Isabelle and Laurent, it didn't work out that way and then Carol showed up for him, and that's exactly what he needed.