Why doesn't he speak to you anymore? is he not interested in a relationship? Please, feel free to tell me to mind my own business if this is prying.

Just that it must be really difficult for you, not knowing where you stand and/or thinking he doesn't ilke you. Can you (both of you) not talk it out - as in, does he want a relationship, if yes - where to go from there etc.

It is not fair at all towards you that he leaves you hanging on and guessing as you say. Is he aware of that (i.e. that all this is hurting you)?