Crush Please Help!!!

Ok Ladies I have a crush on this guy at my school , but I'm not sure if he feels the same way. We text all the time except when he works. I don't care how late he gets off he always messages me. He Always said something in the morning without me saying anything. I have flirted and everything and told him I like him and he just said he knew. I didn't want to seem desperate so I left it at that. I'm about to give up lol any Advice!!!!!!!!