I've heard a lot of people say that it doesn't quite "fit" in the movie itself, but I think that's what's so great about it. They could never have even come close to the Simba/Nala romance song scene if they tried to go for that same feel, anything trying to replicate it would have just seemed like a cheap copy.. it seems like they went for something completely different, a more lighthearted fun thing and they totally pulled it off 
It was my favorite lion king song ever really, so that's really sayin' something! It's so catchy!! I've got it as my ringtone
Anyone else with me on this one?...







