Xu? I can understand that. She was responsible and mature but also capable of enjoying herself.

However, I think Squall and Quistis would've made a better couple. She could teach him to open up a little, and he could show her how to cope a little better with pain and hardship. They've got a lot to offer each other. Quistis certainly deserved better treatment than she got. Squall would've had fewer arguments with her than with Rinoa; they also have a number of things in common - their history, occupation, etc.