Ok so like, there's this guy I like and he told me he likes me too, but like when he said he liked me, it was over aim and I asked him about it and he said "Oh well my friend was on my account" and stuff, but like he made it so I would know if it was him by saying "I love you" as the code words. I'm so lost. I don't know if he likes me or not. Also one morning we were talking on aim and like he was all so why have you been ignoring me, and like he's the one who doesn't talk back to me. On Valentines Day he was all "So what did you and your lame boyfriend do? " and he knew I didn't have a boyfriend and was all "Oh so your going to pretend I didn't ask you for your number? ". And like I was going to give it to him and I said do you want my number but he always avoided the question and never brought up my number again. I'm so confused.
He is trying to play the game. You need to put a stop to it now, easily, if he asks you about your boyfriend. You can say, that's personal. It will shock him, and I bet he won't bring it up again if he likes you, it will bother him to think there could be someone else! Play it direct dear! If he says you pretend that he didn't ask for your number, tell it right! Say you didn't ask me for my number, or you would have it. He wants you confused, don't be!
This is going to sound really harsh hunny, but he sounds really immature. But it does sound like he's interested, he's just putting it in a really strange context. Ignore him for awhile, make him want you more, if that doesn't work, work for it. Two can play that game right?