Friends. Or maybe not??

Friends. They build you up and are there for you. At least, that is what they are supposed to do, right? Over the past few months, I have seen some old friends and had a little time to catch up. Before we go our seperate ways, one of us will say "We should hang out sometime" to which the other person responds to with, "yeah, for sure. Facebook me or something and we will figure it out". Now to me, that means that the other person is interested in getting together and maybe hanging out or doing something. But what I don't get is why someone says that, and then you try to organize something, and they are busy for the next month or two. How does that work? I mean, I have one friend, she lives a couple hours away from me, but she said she would let me know when she has some free time and we can hang. She hasn't contacted me at all, and yet I will see on Facebook that she has gone out to Alberta to see her boyfriend, or gone to visit some of her hometown friends without even thinking of me. And as soon as I say something, it's always, "sorry, I am just so busy right now". I mean, even today while I was talking to her, she said she was sad because she had an amazing weekend with her boyfriend, but now wouldn't get to see him for a month. When I asked if she wanted to hang out at all during that time to try and cheer her up, she said she had no free weekends for the next 2 months. That seems a little confusing to me... And then I saw another friend on Saturday while she was working. We chatted for awhile and she is going to the same city I am for school and was thinking we might be able to hang out then. I figured, if we were going to do that, why don't we just hang out beforehand too, but she is busy until September, and then she doesn't know. How can you be busy every day for a month?? Aren't you going to have any free time to yourself?? Or maybe it all just boils down to one thing. It's me. Seems to be how that always goes. As soon as I try to do something, it just goes up in smoke. I don't even know why I am applying for school. That will probably just get messed up and fall through like everything else. I don't even know why I am here. Nobody would miss me. Nobody would even care. I would just be one less person they would have to clear their to busy scheduales for to hang out with. I should just die :'(