I am so sorry you are feeling bad, hurtloam, and I would feel the same way. Have felt the same way. After more failed marriages and long term relationships than you can shake a stick at, and being much older, I made the conscious decision to stop trying. I was going to make my life and it would be a solo one. I had a great year. I did things I hadn't done in years. I did the stuff that I like to do, not what someone else wants to do, or to please others.
I even told a girlfriend: Look, I have blown every relationship I have ever had, mostly by picking out men who were not suitable for me. I am acknowledging that I have no idea how to pick out a partner, or live with someone. So I made a vow, witnessed by a friend, to STOP.
About a year later, from a totally unexpected quarter, I met the man I am now happily married to. And it wasn't at a social event, at church, in a bar, in any social milieu at all. I wasn't trying. I wasn't making friends. No social efforts at all. I tried to fight him off. I played late Beethoven string quartets, I also played Stravinski. I told him I did not want a partner. I told him about all my faults. I had meltdowns. I was crabby. At the time I had a foster child, and I put her first. He couldn't bring alcohol or firearms into the house. I refused to be accommodating. He just wouldn't go away! We've been married for about 9 years now, together longer than that.
In my case, the harder I tried, the more failures I racked up. It wasn't until I completely quit trying that something happened.
I hope you feel better and find some good things in life.
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The river is the melody
And sky is the refrain - Gordon Lightfoot