is he playing games or does he like me i feel dumb

you know guys really confuse me so there's this guy i like and i think he likes he noticed me first i didn't even like him, he aggravated me everyday for a month than i started liking him back so any ways minute he flirts with me the next ignores me if he's around guys he acts so goofy and when he's alone he so sweet and more serious then ignores me again than i catch him always staring at me and he's never asked me out what up with that i feel confused i don't like games if you like me just say so if not live me alone.