I personally retconn the heckie out of SRIV’s the-earth-esplode!!1 storyline, but that doesn’t mean I won’t find some way to work in some sad angst ahahaha
At the end of SRTT, Lia moves to Paris to fulfill her dream of being an actress. She effectively, at this point, has a long distance relationship with Pierce. Things get strained, of course, these relationships aren’t easy, that’s why there are so many songs about it.
But then the earth blows up, Pierce shakes it off with pragmatism; there’s nothing he could’ve done. Lia’s gone as far as he’s concerned. Maybe it’s better this way. She went out with all the glamour and fame she wanted.
Kinzie tells him, one day on the ship, “Found your girl.”
And then, damn, he doesn’t let go. He can’t lose her, not again.