If a guy rejected me and is avoiding me should I talk to him an tell him that I want to be friends or forget?

About 2 months go I confessed to a guy that I liked him and he told me that we can be friends but he started to avoid me completely and sometimes he would say hi to all my friends and won't tell me ( this really makes me sad) and the thing that bothers is that he won't even look at me and it makes me wonder why? What have I done to deserve that? I am not expecting anything from him I just want to be friends again
If a guy rejected me and is avoiding me should I talk to him an tell him that I want to be friends or forget?
Post Opinion