Board Thread:General Grimm Discussion/@comment-25875828-20150512091124/@comment-27406225-20151216014315

The most plausible explanation is that Nick knew Adalind as a Hexenbiest from the beginning, whereas with Juliette, he knew her as being human first and foremost, so he might be less accepting of any changes from that norm. Juliette was the most normal thing in his life so he must have been in stubborn denial when she changed. I'm not defending Nick though, his handling of the whole situation was very poorly done. I completely agree - his acceptance of Adalind is unsettling.