Board Thread:Character Discussion/@comment-30235980-20161015165325/@comment-25375217-20161015190721

Because that means he can't possibly be 13 when he says he is in Dreamcatcher. I don't know the exact specifics but basically, Dreamcatcher takes place early in the year that Henry would turn 13, whereas August is... well, not early in the year. February makes it possible.

What most people have accepted is that he lied to seem more fitting to date Violet. But it seems a little out of character.