You see, the girl represents all teenage females in this modern day of models and emaciated women, and clearly the girl is feeling insecure as a result of aforementioned models, leading her to ask the boy (who clearly represents the approval that all teenage girls are so desperately striving after) "bbz dya like my tits?". When he denied her approval, she METAPHORICALLY caught on fire, seeing as though when girls are dnied approval it consumes them like fire. Upon seeing what he had brought upon her, the boy, realizing now that we have asked and expected way to much of the average woman theses days, exploded with rage and sadness. So as you see, there is more than meets the eye to this profound, timeless work of poetry.