Board Thread:False Info and Speculative Discussion/@comment-24447558-20140701205038/@comment-4091815-20140702043544

How does it confirm this?

Derek was an adult in that episode - trapped in a teenage body but still an adult.

If - as many here contend - his birth year was 1988 (see fake ID) - then Kate (born 1983) was 20 when he was 15. A five year age difference between two so young is hardly a problem in most cultures.