The sun-kissed couple couldn't have looked more compatible, but according to E! News insiders, Kate Hudson and Owen Wilson hadn't been getting along since they reconciled back in February. "Look, they haven't been getting along really for most of the time they've been back together," a friend of Owen's tells E! News. "Owen can be a moody guy, very up and very down. And Kate is so upbeat, it was hard for her to take." Add to that the rumors that Owen was flirting up a storm with other women while Kate was in Boston filming Bride Wars, and is it any wonder that things ended badly for the twosome? "Yeah, it was pretty hostile," reveals the insider. "Lots of shouting. Lots of tears. She was done after that."