I admit I am not overly familiar with such matters, but I fear sometimes a voice does not fade, even if the mun desperately wants it to. It does get rather frustrating when people simply disappear, but life can be so very complicated someone. I do not think you nor your mun should take such things personally.

And you never know. Perhaps giving it one more try will yield better results? If you want something desperately in your heart, then it is worth trying for.