[Sad, but... not burdened. He looks up cautiously to study her expression. It's somewhat reassuring, but her words make him wonder if it's he who isn't doing enough- to reassure her that she is. It's never been a matter of her not doing or being enough to satisfy whatever his needs are. He doesn't have cause to complain- not really, not until now, when she tried to put his perceived needs over herself.]

We can talk about it, if you need to. When you think... [That he's dying, that she's not doing enough, that it's unfair. If he says it out loud more often, will it become easier to get used to? Hell, that can't be the only thing that worries her, considering her own future. How much is she keeping quiet about?] You don't have to hide it, or keep it to yourself. You don't always have to be happy around me, especially if it isn't real.

[She has a beautiful smile, and he loves seeing it, but he's grown up around enough fake smiles in the Citadel - given plenty of his own - to know they're not worth as much as the real thing. He doesn't want her to do that for him.]