I kind of like that when they leave room for interpretation. It sort of encourages the imagination of fans. What was PB and Marcie's dynamics like? Why did Marcie give PB the shirt? etc, etc. It allows the mind to wander and become that much more engaged in the story itself by wondering and (in many cases) contemplating their friendship (or more-than-friend"ship") and what it was like before they grew apart. It's cool, cause they aren't treating their fans like simple consumers, but allowing them consider what was meant by what was said and, more importantly, what was not said.
Sorry, I rambled, got a bit theoretical there.