Fang's response wasn't surprising.

There was a time where he'd have been just as eager to return home as he suspected Fang was, but that time was over. He had things here on Spira, people, that he wouldn't give up to go home. Aerith, a renewed friendship with Isa, or Saix as he still preferred, a job, a life...

Fang still wanted it, he could see that.