Do you think he likes me? I'm not sure...?

Yes he really likes you, and he probably was going to ask you out but just got nervous and chickened out. All the signs are they, he thinks your pretty, likes you the way you are, asked you to eat lunch with him, you both have a lot in common, he shows you his personal songs and poems and many others. Sound like you are two are a great couple. He is just shy to ask you out, if you like him then ask him, you don't have to wait for him to make a move. It will make him feel great if you make the first move. Good Luck :)