The biggest mistake you can make in a relationship is to be entrusted with potentially hurtful information and to use it as leverage in an argument. If your partner opens up to you about his fears, needs, desires and other secrets, and you turn that on him, you've gone to a place from which there is likely no recovery. You must be a good steward of his private revelations.
If you take a judgmental attitude and are always ready to condemn a man's every move, you may be right, but you'll also be lonely. Decide right now that your goal is to be successful rather than to prove yourself right and men wrong. Focus on understanding how men think, rather than why they do, and I promise you'll get a lot more of what you want.