Hi

Im 17, and just broke up a few days ago.
My gf had to go to some kind of school for a year, ruining the relationship in her opinion. She does not believe it would be able to work out in any kind of way, and nor would I ever try to force her into taking another decision, yet I did mention my own opinion. She stated clearly it had to end this summer, and when she got really upset about it, I simply asked if it would be better just to end it as quickly as possible. So it did.
It is far from the first relationship I've ever had, but I haven't really been just as sad as I am at the moment. Our break up haven't done anything yet but to depress me, and no matter what I've done, I just haven't been able to see any light at the end of the tunnel.
The most friends I have, state they want to help me as much as possible. But since I was considered as a part of the elite when it comes to math, physics, chemistry and biology; people just tend to abuse it rather than to actually help.
People who have come to me, haven't tried to help for more than ten minutes until the whole conversation turned into the complete opposite. There is very few people who does not consider me as an object at the moment.
The way people has grown to look at me, started for about 6 years ago when my sister had gotten the diagnose of (extreme) cutting, borderline, schizophrenia, anorexia nervosa and a few other things which I am completely unable to remember at the time being. People did tell me they would be there for me if i was all down because of the situation, but they stopped when they heard I had already been able to handle quite a few of her suicidal attempts at the age of 13.
This is most of my background history of what makes me what I am. As soon as I got marked as an elite, taken out from class a few days from time to time to get some special education, people who knew my background started to seek advices at me. They all suddenly forgot how big an arse they may have been to me and started looking at me as some sort of iron man who is able to handle everyones life with ease.
Seeing as I have saved all my "friends" asses whenever they've been in trouble, I have never turned my back and I've always supported them. Which makes me feel deep misery when they clearly does not seem to care for me at all.

I've been used to be on my own since my parents more or less forgot my existence when my sister became sick. I have to admit, though, my father did try hard as hell to not do so; may have been inevitable, so i do not blame them.
Meanwhile my uncle did the opposite. He did what he could to take me out on trips, helping me a lot. As he has been the only one taking care of me, it doesn't help at all on my current situation, he has been told he has prostate cancer.

I barely have anything else on my mind which could possibly describe my situation. How am I supposed to handle this?! I'm inexperienced, overestimated and have absolutely nowhere to go this single time i actually need help.
The end of this relationship is tearing me apart from the inside and I just have no idea what to do when I just can't sustain the misery...
I've been trying to just think about anything but the trouble I have, but people tend to make me remember with ease.
I have been thinking of just leaving them for themselves for a bit, but I don't believe it could help anyone as it may not teach them anything but how troublesome life can be; which would not be the idea in the beginning anyway.
Telling people about how I feel have not helped me so far.
Psychologists may be a bit overkill.
I can't get that lad out of my mind.
Some people tend to alcohol/weed; but even though I find that stuff great at parties and I have lived with it forever, I would never think of it as any kind of help, just a sinister way to delay pain.

I am terribly sorry for the bad grammar and/or bad construction of a post. I'm just surprisingly not in the right mood when it comes to perfect a post.
I am also aware I may not be anywhere near the trouble others have, and my age may be quite low compared to any one else posting, but this post is just something i created in order to get advice on how to get further; even though I may not get help from anyone I know. In the end, the inevitable break up may have been the whole reason I've gotten so depressed, but people around me makes it worse and makes me feel lonely.