I regularly think to myself that I don't ant to hang on to something that may never eventuate... But I honestly believe that thoughts become things, that we create our own reality and that we can choose happiness.
Many people on this forum have had success in attracting back their love, and in many situations their 'new' relationship is even better than it was the first time around. So inspiring.
To answer your question, I think it is a matter of what you believe. If you BELIEVE that true love always wins and can overcome anything, if you believe this to the core of your being and this is what you vibrate, then this is what you must necessarily attract into your experience. It is law. That is how the Universe works. If, however, you have doubts about true love, then you will attract into your experience scenarios which will lead you to continue to doubt whether love conquers all... Hopefully that makes sense.
They say the key is to let go... I am still trying to master the art of letting go myself, but I think it's getting yourself to a point where you are just living and loving life, rejoicing in it and believe beyond a shadow of a doubt that your desire is yours. Not that it will be, but that it IS (present tense). So essentially you don't have to worry about it but can get along enjoying your life and attracting other desires to you.
Have faith. Believe. Have gratitude. Feel love and KNOW that anything is possible.