An interesting theory from my little brother:
Letīs suppose time compression already happened in the beggining of FF8.
If we look to the relationships of the main characters and their feelings we can spot that:
Seifer and Edea =Rinoaīs fathers
Squall and Rinoa =Zellīs fathers
Zell and Quistis =Selphies fathers
Selphie will marry with Irvine.
Caraway adopted Rinoa (Ultimeciaīs fault she was orphan concerning the father)
Ma Dincht adopted Zell (Ultimeciaīs fault again)
The White seedīs constitute the rest of the family (Irvineīs fathers,Quistis fathers,uncles,nephius,etc)
Dincht was the natural surname of Zellīs adoptive father.
Quistis love for Zell colds in the game because she was an instructor and it colds her love (Quistis also have a pigtail doesnīt she?)