Now that we've learned Jin (Daniel Dae Kim) and Sun (Yunjin Kim) are not reuniting as soon as Lost fans would like, the big question is why. After Jin missed the helicopter carrying Sun and other Oceanic Six members, the two have been miles, and years, apart until this season. With no definite reunion in sight, we talked with Kim about what is keeping these two apart and their alternate timelines — plus, a new theory on the possible connection between Jacob (Mark Pellegrino) and Sayid (Naveen Andrews).