Onetime lovebirds are even 'trying to ... hang out before we go on tour together,' the JoBro says.By Jocelyn Vena Joe Jonas and Demi Lovato Photo: Dimitrios Kambouris/ WireImage In May, Joe Jonas and Demi Lovato broke up. And in August the "Camp Rock" co-stars will embark on a tour together. It's hard to imagine many things more awkward than hitting the road with your ex of three months ...