A man I barely know wants me to come over so he can cook for me But he's 14yrs older then me?

If you barely know him, DECLINE! He could be a pedophile or pervert for all you know. Be polite, but wait until you comfortably know him before you let him "cook for you". That's kinda weird anyway.

Why do you care what someone you barely know wants? Because he does and because he told you is no reason for you to concern yourself about it. You are in charge of what you want.