[Ion shakes his head.] You don't need to apologize, Luke.

[He sits back against the tree, trying to read Luke's mood. Guy seems to have been gone for a little while now, so in a way at least his departure isn't exactly a fresh wound. But then again, for him to make that announcement now means it's probably only just sunk in.]

Even knowing it's a fact of life here that people leave just as suddenly as they arrive, it doesn't make it any easier to deal with. But for what it's worth, this isn't the first time Guy has left Luceti. So it's always possible he could come back again someday.