What's the Deal with Meilin and Li?

What's the deal with Meilin an Li? I'll tell you. Meilin and Li (In the American dubbed version) they are boyfriend and girlfriend. Easy to see, right? Well, in The origonal Japanese version, Mei-ling and Sayoran Li were engaged for marriage!! (At ten?! Why?) And they are cousins! (WHY?!) Yes, Mei-ling is a part of the Li family, though she has no magical leinage, which is very unusual... *Spoiler*If you want to know the fate of those two, click here.*Spoiler*