As the novel goes on to reveal, Park sees Tina as his last remaining link to a chance at popularity—or at least the last thing standing between him and total social obscurity. For this reason, he has trouble accepting that she is writing such cruel things to Eleanor, because believing so would mean that he’d need to abandon his ties to Tina. He’s so desperate to preserve that link that he suggests Eleanor herself is writing the sexually explicit messages—a slight she cannot bear.