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If someone had told me last year that you and I would be the two loneliest people in Newport, I wouldn't have believed them. Well, at least not the you part.
— Seth ‧ The O.C.

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker is surprised that both people have become lonely, but quickly admits that their own loneliness would have been easy to predict. The correction makes the joke self-deprecating. It singles out the other person as someone whose isolation would once have seemed unlikely.
Context reviewed