We never miss people who have left us alone, who had breakup with us, who have just stopped talking to us.
We always miss the memories that we both have shared together, all the moments that we have lived together.
But the fact of life is, you don't need those people to create moments like those in your life in future, as the person really doesn't matter. And the moment you lived in your past is not going to come back ever again.
So, Stop wasting time missing people in your life, start living your life with people you have with you right now.
Live in the moment, don't carry the burden of the Past.