I learned not to look at it that way, and instead chose to think that we were just not compatible. I looked for 30 years at myself when it wasn't really me to blame, it was more the choices I made. Eventually I met someone, and it as close to perfection as you would want it to be. It has been for 13 years now. Fate sometimes knows best :)
The last phrase might suggest you're slipping into the trap of blaming yourself, unless you're using "you" in the plural sense. Its always worth remembering it takes two.