Sun and Jin are probably two of my favorite characters, and I always thought their story spoke a lot about the meaning of love. I think the brilliant thing about their story is how only having one side of the story can affect our perception of someone so much. From this episode of Lost we mainly learn about Sun, and Jin comes off looking just about as awful as he has been in the previous episodes. Along with learning more about Sun, we also see the survivors are having a dilemma with deciding on whether to stay on the beach or move closer to water.
The topic of faith is brought up in this episode once again, hinting at a long running theme that will probably be the most significant of all. We have the discovery of a male, and female skeleton, which gives them the nicknames "Adam, and Eve". Not only that, but Locke and Charlie's discussion lead into faith territory in the search to recover Charlie's guitar in exchange for giving up his drugs. Along with these things we see Jack embracing his new role as leader. I think the comment that most stood out to me was Kate, who said she did not want to become the next Eve. I find myself still pondering what she meant by this to this day considering she isn't the only woman on the island.
The root of this episode was Sun and Jin though. We begin with Jin exploiting just how volatile we've believed his behavior can be when he attacks Michael. This leaves him handcuffed, and Sun searching for someone to release him for most the episode while we see flashbacks of her. At the beginning of their relationship we see two people who seemed to have none of the problems that they currently are having. If we had to take a guess from this episode it was Sun's dad who started the behavior even though we don't know how. Of course the biggest reveal of all is that Sun was actually going to abandon Jin, and she knows English.
So from this episode we see that just because two people knew each other before the island doesn't necessarily mean they can trust each other. We continue to further develop the connection to faith that everyone on the island has especially with the new discovery of Adam and Eve. Not only that but the survivors are having to make a crucial decision on whether to abandon their home on the beach in hopes of rescue to survive with the essential resource of water.
Who is Sun's father?
Who are the two skeletons found on the island?
How did Sun learn English?
Why did Jin have blood on his hands in the flashback?