I don’t think this is a terribly hot take, but I think Jason and Lucia will get a happy ending
It’s not Red Dead. The ending of GTA V is pretty wholesome and goofy, perhaps there’s different versions where maybe you can get married or not, or something like that. But I think the surprise twists and betrayals will come from NPC’s that we like. Maybe I’ll be wrong but I can’t see them locking out one of them for the endgame/free roam stuff because I’m certain they’ll have different missions and activities.