Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-72.192.213.236-20130731063426

We at least know how old Peter said he was.

Near the ending he said, "a fifteen year old boy" when referencing Derek (and his plight against Ennis).

Then again, ages seem much more complicated and he could have just said fifteen to make the whole ordeal easier and less shaded, but...it just seems like something he wouldn't just lie about or throw in ranomly. It seems plausible that in human years, yes, Derek was fifteen. 