Can you help me with how to deal with that person?

Ivy_Chen

Maybe just like your words, he is a so forgetable person or he is busy or some other reasons, but do not only remember one's shortage, but also the man's strongpoints. He is a popular and outgoing person, he always make you and your colleagues laugh. He brings the happiness to you, but you treat him as a terrible man, then he will be hearted. Have a try to change your attitude and maybe he will return better back to you.

Ivy_Chen

whatever, may you have a good relationship with the people round you