While it's fun to joke about, it doesn't come across that way for me. I always thought the Lelouch/Suzaku relationship had the potential for the same degree of intensity, like it was the three of them against the world until Suzaku decided not to play. It just seems to be part of Lelouch's personality that when he cares about someone, he cares about them, and Nunnally has been there the longest and needed him the most.
(no subject)