We know how it feels, OP. It might seem like your scenario is unique, but it is just part of life. Sometimes it feels right, but it doesn't work out, and we want more than anything for it to be corrected, but eventually you will find a girl that doesn't any resolution. It's important that you keep yourself healthy and motivated, not only for your own sake, but your loved ones. Don't kill yourself over a girl. And shit, I know just how "counter-productive"(?) it is, but there is always the possibility that you will reach a resolution.
Break-ups are hard, but you are strong. Don't kill yourself. That would hurt your parents.