What do I do if the guy that I like likes me too, but is shy and like doesn't text me for days at a time? I just don't get it?

Your logic is flawed: Your premise is based on the assumption that he likes you. It would appear to me, based on his actions, that it is pretty damn obvious he does not like you. You are just in denial. Perhaps he is polite, and doesn't want to hurt your feelings. At any rate, if he liked you, he wouldn't be ignoring you for days. duhhh.