Dear Diary, I feel much better now. No more pangs of sadness. I searched everywhere, all day, couldn't find anything. I don't know why but somehow I'm no longer sad and worried.
I gave you to a loving family, I knew that and I still believe that. My SO said you would've passed away by now, not many can live older age than your current age. If you have left this world, then you are now in a much much better place than I or anyone in this world can ever provide you. If you are still alive, I wish you warmth, affection and perfect health wherever you are, whoever is the lucky pet owner currently taking care of you.
In a way I understand why every effort I made brought no result. Had I found you, I would've insisted to take you back and that would've not been fair to your current owner. I can't do that to you. I'm letting this go. I'm letting you go for good.