How Judy x Nick relationship will evolve in Zootopia 3, my version
Nick has already been aware of how big his crush for Carrots is for a long time, and he's used to hide his feelings since forever, so he will be just astonished to see her sudden change of behavior.
Out of the blue, Judy will start to think of Nick more than often. To play the carrot pen recording at least twice every morning and every night. To physically react to Nick's close proximity. To be fidgety when he isn't around. To feel a sting in her chest when he's talking to some cute girl. Her heart will start racing every time he appears in her mind or sight.
To her greater shock, she, naive but definitely not that dumb, will finally realise: she's in love with him.
And how will she behave accordingly? She'll be unhinged.
At first she will try to be normal around Nick but soon fail miserably. She'll spring 3 meters away when he casually touches her. She'll talk much less, afraid to say anything that could betray her feelings. She'll act even more reckless at work, worrying him sick. She'll run away any time Nick tries to ask what's with her.
Their colleagues will catch something, especially Clawhauser who has a special flair for romance, but they will keep their mouth shut in front of them (though gossiping wildly in their absence).
As a result, he will start to question their partnership, and himself, and what he did wrong so she doesn't want to stay with him anymore.
At this point, the main plot will take over and they will be tangled in the case, putting their issues temporarily on the side.
By the end, in a life threatening situation, Judy will be somehow forced to admit her true feelings for Nick, otherwise she will lose him forever.
And when she does, he will be speechless for a while, then finally do the only right thing he has to do: grab the dumb bunny and kiss her
Cheers, fireworks, cork popping, Wildhoppers sobbing and hugging each others in happy tears
