Board Thread:Episode Discussion/@comment-3125844-20150320175116/@comment-5083222-20150408105357

What LittleNaiad21 said: Nick is not being a jerk. His biggest problem is GUILT

Nick feels guilty he has the power of a Grimm and how it has affected his life and the love of his life

He feels guilty of all the things that has happened to to her

He's not recoiling from Juliette's Hexenbeist visage, he's recoiling from knowing that HE is responsible for it.

That is the difference between Nick and Juliette. She has a pity party on how things affected her. Nick is upset and is genuinely feeling guilty about how his actions affected others