“And baby, it's amazing I'm in this maze with you
I just can't crack your code”

Jay-Z – Holy Grail Lyrics on LyricsMode
EXPLANATION
He's saying that he can't quite figure her out, but he likes that about her. How she makes him fight to be with her. It also could mean that she's trying to tell him that she's through with him by doing all these mean things to him. Basically telling him they're through without actually saying it to him. After all, actions speak louder than words, right?