They are all going to think the oceanic six are dead.
From their point of view, they saw the ship blow up, then the island vanished, they never saw the helicopter ditch, but they know it was low on fuel and with the island gone, they would assume they just drowned, since they wouldnt know about Penny's boat.
I can see Sawyer and Juliet getting together, and if Jin survived and thinks his wife is dead, maybe he will get with the red head, since she can handily speak his laungage and help him learn hers.
From their point of view, they saw the ship blow up, then the island vanished, they never saw the helicopter ditch, but they know it was low on fuel and with the island gone, they would assume they just drowned, since they wouldnt know about Penny's boat.
I can see Sawyer and Juliet getting together, and if Jin survived and thinks his wife is dead, maybe he will get with the red head, since she can handily speak his laungage and help him learn hers.