[It takes him a moment, really; this is difficult for him, for various reasons, and finding words isn't exactly easy despite knowing what he wants to say.]

You don't ever have to question whether I care about knowing that you're all right, or whether I would miss you if you died. You're important to me, of course I'm going to-

[He cuts himself off, though it's less because he doesn't want to finish and more because he doesn't seem to know how; just...give him a moment, all right.]

Things like that are going to matter to me. You don't have to doubt that.