Bloated Ego

Sometimes you see someone in the streets, you will say hi to the person if you know them. If that someone was from far back, you may hesistate or even run up to say hi to them. However, there are some whose ego are so bloated, they think that you should have been out of their life the day you left their sight, and that you should not even come on to say hi. Such people will even tell you to move on with your life. Am I the one with the bloated ego for just wanting to say hi or is the other party thinking too highly of themselves when I had zero intentions when saying Hi? Go figure.