Well, if you read Josh's blog and watch Paramore's "Last Word," you could get the main idea. Josh felt unappreciated because Hayley got most of the attention, and they were having a lot of disagreements about various things, so he left, and seemed to have dragged Zac with him. Not sure if that's true, but since Zac hasn't said anything personally about it and Josh has done all the talking, that seems to be the case imo. But yeah, they still probably haven't talked since then.
