This is one of the reasons why The Swan Princess was my favorite classical Princess movie. Odette’s main objection to marrying Derek is that he’s immature and shallow. Prior to this scene, Derek’s main objection to marrying Odette was that he “could do better” ie that she wasn’t pretty enough. Here he goes “Oh wow, you’re gorgeous! Plan the wedding!” and she’s like “Hold up, no, don’t think so, you’re a shallow immature jerk.” And then over the course of the movie he goes nuts trying to find her, her, even though he could have a hundred other beautiful princesses. His actions prove to her that he’s interested in more than her beauty, and only then does she relent and marry him - because he’s changed, her objections no longer apply. It’s not an “Oh, you saved me, sure I’ll marry you!” It’s “I’d marry you if you weren’t so shallow and immature” then he proves himself to no longer be shallow and immature and so she says “Sure, I’ll marry you now.”
I was unnaturally fond of this movie. I re-watched it on YouTube recently and laughed myself silly (I swear to God that Derek is mentally deficient), but this scene was still spectacular and so profound and such a good, rare message to young girls watching a princess movie. Also, this song is still so much fun.