I think you should really try the Workbook! I don't have it yet but I ordered it on amazon.co.uk, and it will hopefully be with me in a few days. I already read the first chapter, and the mere reading and planning my "Pity Party" filled me with so much hope that I really started believing that it might help me a lot. Of course, it might also not work, but you don't lose anything if you try it.
Also, I think you first need some time to deal with the loss of your ex before you can start dating other guys. You can't really concentrate on them if your thoughts are still haunted by your ex. (That's why I don't date anymore.)
Never give up on hope! xxx

I am really sorry to hear that this happened. You CAN move on, but it's a choice. It's a calculated choice that you have to put much thought and effort behind. You have to choose to bundle up your emotions and feelings for him, put them away & keep moving forward. You have to choose to understand why the relationship ended & accept it & keep moving forward. You have to choose your life over your ex. You have to realize he does have a new girlfriend & you have no business in his new relationship. It's a choice. It's a hard one, but you can do it. Do you have The Breakup Workbook? It's available on Smashwords as an ebook (you can read it online, or on your Kindle or your phone for $5.99) or you can get it as a paperback on Amazon.com. The most important part of getting over someone is making the choice to do it. So wrap your head around it, think about it & hopefully you will make the right choice to move on & find someone better suited for you who wants to be with YOU.