Friendly advice, bud, since you seem to be soliciting such; let it go. You're remembering the anniversary of when you last saw this person, who then didn't see you for over 7 months after that? You are chewing this problem over in your mind and it doesn't seem to be getting you very far.

I understand why you would be upset and disappointed when you thought this relationship was going to go somewhere, and it came to nothing, but by the sound of it you had a lucky escape. Reading of your several hundred texts a day reminded me of the enormous amount of texts that I would receive from my "girlfriend" (stalker?). My suspicion looking back is that she was deeply insecure and needed constant reassurance.

The only way to avoid these sort of traps is not to ignore your own instincts. If something seems odd in a person's behavior, then it's a warning sign, not just eccentricity. If your own behavior is changing to accommodate someone else, why would you do that? Would you want to do that for the rest of your life? Then why do it for the sake of a date? Why do it for the shot at getting laid?

A 7+ month texting relationship would be another good sign, but I understand how people are very good at stringing others along and making it seem as if any day now, something is going to happen. And we want to see the best in others.

If you keep going over and over things in your head to work out whether it was all your fault; it was not. Being human is not a flaw, or rather, all humans are flawed.

I think the best thing you can consider, if you are having a hard time with this, is seeing a therapist and talking it out with someone qualified.