i had to say tidus and yuna because it is so beautiful that their love became so strong even though throughout their entire relationship, one of them was doomed.

i do love the whole rinoa and squall love but it just wasn't quite as beautiful as tidus and yuna. squall had closed his heart to others since everyone he had ever loved had either died or abandoned him, but rinoa made him care again.

both stories were beautiful and sweet (and made me cry!) but my vote goes to the tragic doomed relationship