Cory has a way with words that makes you picture these wonderful descriptions of love. He can't get her off his mind, he describes all these things that an average person would not notice about another. "The way you answer me with your eyes, speaking volumes about things unsaid" is a beautiful description of his love and affection for her. The crackerjack heart means that he wants to know her deeply, and he does, but ther is something else inside of her. He would tear away any shackles or bindings to discover what it is, just to know who she truly is.
Deet.