I am so sorry for the pain you are feeling and I know how it can feel eternal and that you will never find someone, but that is just not true. You say this came from out of the blue, but there must have been signs that you were just not seeing. I have ended several relationships where I got the same shocked response. Once, with a man I was with for almost 9 years. I was so incredibly unhappy I really don't know how he could not have known. You should really think about your relationship in hindsight and figure out what happened and what signs you should have picked up on. When you experience such unhappiness, at least you can use the information to change what happens in the future so your next relationship is better. This finally worked for me and I will celebrating my 8 year anniversary next month to my "soulmate". If you are open to it, you will meet someone. Don't let yourself get closed off.