According to Entertainment Weekly, the bizarre hook-up between Michael Emerson's alter ego and another familiar Lost face will leave fans shocked.
"It comes out of nowhere," an insider is quoted as saying. "I don't think anyone will see it coming."
It has not yet been confirmed whether the romance will occur on the island or in the sideways world.
Lost continues Tuesdays at 9pm on ABC in the US and Fridays at 9pm on Sky1 in the UK.
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