Broken heart

Well here I am again..I am questioning why I trust people..I was talking to a man over the internet,last night he said he was going to come and see tonight and he has not turned up..Why do I do this I tell  someone who I am and what I want,then they through it back in my face..He will not talk to me and that hurts me so much..I have never seen him face to face I have spoken to him on the net and on the phone..I feel I conection with him and I don't know why..I am cold,tired and I am about to cry my eyes out..This is so hard..Why dose this hurt so much??Why do I want to get to know him??