[Hearing it as "dad" is also weird for Terra, but he'll get use to it. Reaching up, he gives Squall's hair another ruffle, more annoyingly teasing this time, more on purpose.]

I'm... [Not sure how he wants to say it, he shakes his head.] The only family I've really had was... Master Eraqus, Aqua, and Ven. I know I still have Aqua and Ven, but...

I'm glad to have you and Auron now, too.