Can a long-term relationship that ended start up again?

I was wondering if anyone was in a really serious relationship for a long period of time that ended, and amongst all odds it rekindled again one day after a long period of time? Me and my girlfriend after a several years split up awhile ago and i've never fallen out of love with her. We broke up on good terms, yet we don't speak to each other anymore. Has anyone been able to bounce back into a relationship when something like this has happened? Could it happen? What cards do I play?