4 : remember
They talk. They talk about Schneizel, and about Nunally, and also about Euphemia, even though those last two conversations never go very far. One time Suzaku tries to bring up the subject of Rolo, just to see if he can get a reaction, if Lelouch even cares about that stupid kid who devoted himself heart and soul to someone he thought was a friend, but Lelouch just laughs, so Suzaku lets the subject drop.
He lets all the subjects drop, eventually.