So you want hope that you will get back with your ex? As most do when dumped. Simple you need to move on first. Get your life back, do the things you enjoy, work on yourself, your wants, your desires, your dreams. Your ex will not forget you!
You don't need anyone to be happy. So give yourself time, whether it be weeks, months or years to find what you want from life not what anyone else does. Keep yourself busy, join the gym and become the guy/girl your ex fell for. Become sexy, fit, changed with a lust for life. Don't be a clingy needy person. As it's a darn lot more attractive if your not and make changes in your life. Understand where you went wrong and LEARN!
When ready you may want to try light contact and see where you go from there. I am finally getting along with my ex now after 4 months of being apart. We have stuff planned together in the next month or so. So who knows... Nobody can tell what the future holds but you need to be happy first!