While I still believe there is no real romance in FFXII. I do think though the pairings are implied. If you've done the Viera dating quest, the NPC has hinted that he'll never thought it'd be ok to date a viera until he saw the sky pirate and his viera partner. It also hints of Vaan and Penelo. Ashe and Basch is implied at the ending with Penelo saying Ashe misses Basch.

In RW, you see more of these pairings.