When they were both human, they were very openly affectionate.

They did not even have a conversation before they were hopelessly in love with one another. One look at one another and each other's voices, and both were charmed.

Or Tiana and Naveen.

Seriously? Naveen even suggested to Tiana that they should get comfortable when they were inside the trunk. Also they seem more touchy than Snow and Prince.

Punz and Flynn...they are a weird couple. First of all, they resemble best friends, not lovers. Second, it wasn't really clear where their love came from, but I bet something happened on that boat. And I have to say, the lust comes mainly from Rapunzel, she hardly showed any interest in Flynn until he touched her hand, and even then I think she was mesmerized by his looks.

Hey, I just met you. And this is crazy. But you're kinda cute. So let's run away together and desert the dwarfs and live happily ever after together - maybe...
I know it's 'love at first site' and all that, but where does that love even come from? And what kind of love is it? They were both charmed by the other, BAM! Happily ever after. They are not 'lustful' but I would say they are the most out of these choices.

Even if they hadn't the best start, they became really interested in one another.

or Tianaveen.

I kind of feel like Belle and Beast and Mulan and Shang might win this poll.

Then Rapunzel and Flynn.