What does it mean when a guy flirts with you all the time? Its really obvious!!! 10 POINTS FOR THE BEST ANSWER?

Well, I like this guy and my friends say he likes me. I personally don't think he does. We are completely opposite of each other!! He is a year older than me. It is really obvious when he flirts with me. He doesn't flirt with anyone else. It's weird!! He knows I like him and I thought he would hate me for liking him. But he said he would never hate me for it.(: haha. Then the day he found out I liked him, I was really embarrassed so, I ran through the school and hid from him in one of there class rooms. He came running in there looking for me to make sure I was okay. (It was kinda like a fairytale, I guess,?) We flirt constantly!! Even when he found out I liked him, we still flirted. I just couldn't work up the nerve to look him in the eyes. The way we flirt is really weird!! He would say something like "Go fall off a cliff" And I would say "Only if you fall down a well!" We say things like that. haha. We say those things all the time to each other. It's really weird!! And when ever one of my friends ask him if he likes me (I BEG them not to!!) he always says either "Idk" or doesn't answer them. So please help!!!!! I don't know what to do! Does it mean he likes me? I'm clueless when it comes to guys!!!!):