any friends really?

I am sitting here in a hot and stuffy com lab in school.... feeling depressed over something that happened last week. See.... i planned to meet this great girl ( or so i thought ) the week before and so i canceled all other appointments and begged of training. I had everything planned from what to do down to what gift to get here then at the last moment she tells me she can't make it..... What a disappointment! Well i heard she was visiting her grandparents so i was okay with that since i twas an important family event ( that was what she said ) On the day itself i was surprised to find out she was on messenger. I later learned from her that she didn't go for the ttrip as she was sick.... well naturally i was concerned i mean you must be pretty sick right and wished her a speedy recovery... next i discovered that she went out the very next day to go shopping! So i am left thinking... was there really an event perhaps she just didn't wanna meet up why did she say ok initially then? I asked her similar quesitons but she just WOULdN'T reply! I got pissed and she got pissed.... i just dunno what to think anymore.... someone help me out! Tell me what i should do.... worse is i can't bear to lose this friendship and because of that i ignored my friends in sch for a while so now i discovered they upped and went to join another group....so........ the fraility of friendship really bugs me is there NOONE that is genuine anymore?