How Long Should I Wait?

On Sunday, I met a guy at the Gansevoort Hotel that i really liked.  He got my number but he still hasn't called.  Does this mean he isn't interested?  It has been 3 days.  I thought that guy code stated that a man should wait 2 days before he calls a girl.  Does waiting 3 days mean that he doesn't like me?  Is he playing hard to get?  What about the rule for girls?  Should I call him instead?  I am not sure how I should handle this.  I think I am going to wait another day and then text him.  I want to let him know that I am still interested but don't want him to think I am too interested (part of that stupid game again)!  

I just wish he would call!