Why did this happen? will i ever hear from him again?

Recently Ive been talking again to this guy I met when i was on vacation in australia. I may have gotten a little ahead of myself and started likeing him quite a bit. We didnt talk for awhile after we both got home, but after awhile we got back in touch with eachother. we'd been talking for about 6 months now, he even said he might consider moving out here for work.. then suddenly one day he told me he had a girlfriend and that he didnt think it was respectfull we should talk anymore. Its been 4 weeks since weve talked, and he hasnt tried to talk to me. He STILL hasnt blocked me on the computer at all, and i am wondering why that is. I kinda wish he would just so that I woudlnt have to remember him. I just really don't know what to think kinda. Still hurts even though I know its stupid. What should I do? he just told me "goodbye krista" like that . pretty harsh and that was it . any advice??? i miss him, i wanna see him and he dropped me. no contact in 4 weeks. Oh even more recently, well we live on opposite sides of Canada, and I just found out that I am going out to ontario in a few weeks..for a vacation..totaly coincidence, which is where he lives. Id never wanna see him after that, unless he did ALL The work. But can anyone just tell me why he then didnt block me? if hes so done with me??? doesnt he miss me or anything???am i ever gonna hear from him again?? or is that it??