I just don't bother! Haven't since my divorce several years ago, but it has nothing to do with pain and resentment. It is because I accepted my own limitations.
I am not capable of being/giving what most people want/expect and I no longer want to hurt anyone else.
I have someone special in my life that I'm very close to, who is also my best friend and I'm now happier than I've ever been.
What's right for everyone else may not be what's right for you. There is no law saying you have to have a traditional relationship, if you can't handle it, then don't.