"We’ve become more psychically linked with each other. You wake up in the morning and just know by the way someone blinks whether to stay away from them, or whether they want some support, or whether there’s going to be inspiration to write a song. We can read each other much, much better these days. We’ve never imposed rules on each other. From day one we’ve always been allowed to scream blue murder at each other so there’s not any censorship involved. I think that’s helped our friendship a lot. There’s no kind of politeness involved either. We just behave however we like to each other. If we feel angry then the other person gets the other end of that person’s wrath. There is a hell of a lot of catharsis in our friendship."