Many women don't want to hear this but, the reason your high value man is being flaky and fickle is likely because of your own behavior towards him.
Ouch. That's not a very nice thing to say. But it's a real thing to say. You see, high value men have a very low tolerance level for neediness, smothering, buttkissing, being too available aka being thirsty and squeezing him into tight spaces in trying to force him to commit.