this is just my belief but i believe people can only run away from what they truly want for so long. With time it just gets harder and harder to suppress. You can only deny or runaway from it for so long. That's why a lot of exes come back after theyve done all they can do to shove down their feelings and push the individual away. if a person is really missing someone that much, time only makes it worse. that's when you know its real. if the love is that strong it never goes away. same goes for the missing someone esp if there was never proper closure. if the other person has made it known they moved on then maybe they would never disclose it or try to come back but if the door is still open even just a crack, the wondering and what ifs will eventually eat them up inside. just my 2 cents. if they never make it known, don't come back to me that just seems like it wasn't what the individual perceived it to be. to me, the heart always wins in the end, always.