This one polar bear needs to find himself a wife.. she can't not know what he looks like, the only time he can be a man is at night, so they can have sex,it doesn't show any of that in the movie. But she can't know what he looks like.. she really wants to know, so her 2 sisters give her a candle so she can see him while he is sleeping.. he wakes up to her with the candle and gets pissed, he's under some kind of spell.. I don't really know.. its a kids movie I think...

The Polar Bear King, maybe?

Yes.. thank you so much