They seem to still be the same couple in seqeuls...albeit one I'm not fond of, but still the same.

Ariel & Eric- Ariel is has a stick up her ass & Eric is just....gay. So acting together they seem unlike how they were in the first movie.

Cinderella & Charming- Yeah, they're still good.

Belle & Beast- well, Beast has turned into a mopey retard with terets, and Belle is more gooey and soppy than the Notebook.

Mulan & Shang- Uh, well they made Mulan giggly and girly and kind of stupid & dull, and Shang has become Shang: Douchebag Edition. So they fight a lot and stuff but...well I never really knew them as a couple in the first place but that is NOT how I would picture it.

i also like cinderella and charming in cinderella III, because they have a personality, especially prince charming =P

Although I like Aladdin and Jasmine in their sequels because they maintain the same kind of relationship, I adored Cinderella and Charming's relationship in Cinderella III: A Twist in Time even more. The prince got a wonderful personality, and I love how you can actually see their love for each other verses before when it was just kind of love at first sight then they lived happily ever after.

Cinders & Charming
Mulan & Shang

The other three couples I didn't really like in the sequels at all.

I really don't like the others.