Yes - its called depression
. Depression is a very debilitating and crippling illness. You cannot die from a broken heart - it just feels that way. Your whole life is crashing down and you feel like you want it to end. When you are severely depressed you do stop functioning, except on a basic level. Hygiene, nutrition, excercise, everything takes a back seat whilst you try and cope with the weight of the illness.
You are still young and you can't say what will happen in the future. Take it from me - the world is full of amazing surprises. You could meet someone who totally understands you and be blissfully happy. You do not know for certain. At the same time, we are not defined by our relationships. Plenty of us live alone and are content to do so.