See, and now I do genuinely want Sheridan/Delenn/Lennier fic, just because of that little exchange. /o\ On the other hand, I think Babylon 5 is one of those magical stories where I like (almost) all of the characters enough that, if well-written, I'll be interested in reading every conceivable pairing. (Sheridan and Delenn feel strangely off-limits to this rule. To my faint horror, Londo is sort of what proves the rule. I will ship him with EVERYONE.)
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