I think there were so many great connections to betrayal in this episode. We start off with Locke leaving Kate behind, which is a form of betrayal. His selfish intentions leave Kate in a very dangerous position. Then we see Cassidy (Sawyer's ex) a victim of his own betrayal of her meet up with Kate. I never really noticed any similarities in these women until this episode. Sawyer really does seem like he has fallen for a lot of the qualities in Kate that he also saw in Cassidy. It was really interesting to see these connections. Then we have betrayal with Kate's mom. What really got me is that Kate was like I did it for you and she said no you did it for yourself. Betrayal by blood ties has to be the worst, followed by betrayal of the one you love, which is what Cassidy experienced with Sawyer. We also see betrayal with Juliet, as she is left behind with Kate.

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Because all we really need to survive is one person who truly loves us. And you have her.