Adalind is not a replacement for Juliette. She occupies a new plave in his heart. It doesn't diminish what Juliette was to him so I don't see why it's necessary to diminish Adalind.
Juliette told Nick he loves Adalind and Nick said he thought he would go crazy without Adalind earlier in the season in back to back episodes. Adalind ending up with Nick doesn't make her a better woman than Juliette. It just means that she ended up with Nick and nothing more. I don't doubt Nick loves Juliette but he's no longer in love with her.
Juliette is not the owner of Nick's heart. Writing issues aside, Nick loves Adalind which would be hard to do without his heart.
Juliette told Nick he loves Adalind and Nick said he thought he would go crazy without Adalind earlier in the season in back to back episodes. Adalind ending up with Nick doesn't make her a better woman than Juliette. It just means that she ended up with Nick and nothing more. I don't doubt Nick loves Juliette but he's no longer in love with her.
Juliette is not the owner of Nick's heart. Writing issues aside, Nick loves Adalind which would be hard to do without his heart.