I'm sorry that you feel like this OP.
I seem to be happily single and I wish I knew how or why. I thought I was very happily married when ExH announced out of the blue last year that he was unhappy, handed me a list of my failings, and left to stay with his sister 2 days later. He never came back. I was devastated and assumed I'd be broken for a very long time.
But somehow, I gradually started to feel better and stronger and now 18 months on I am happy to be single.
My divorce is brutal, I'm facing an uncertain financial future and will need to move as soon as it's over. But despite all that I'm happy. I feel free, and I can't wait for our new start however difficult it might be.
For the first time since my early teens I have no inclination to be part of a couple and I don't want a relationship. It is a new feeling and I like it.
I have wondered if I've been so hurt that something has shifted and I'm subconsciously trying to avoid getting hurt again- but I don't feel like that TBH.
I do think maybe it has something to do with my age- I'm almost 50. I'm past having any more kids, so there's no biological clock ticking. I do hear the general ticking of time though, and I'm conscious that life seems to be going so fast. I'm determined to make the best of it, and I don't need to be part of a couple to do that.
I'm lucky to have good friends and a job I love. I think these things help. I get hugs from my mates, pets and DS occasionally. Love honey has introduced me to a new and unexpectedly fulfilling way to experience pleasure.
I wish you all the best OP. I hope you find someone who deserves you, and you make each other happy. I think in the meantime that anything you can do to make yourself happy will benefit you whilst single and also help you attract a partner- fulfilled people are attractive inside....