[He's hardly the type of person to blame someone for forgetting. He wishes everyone could forget because maybe then he wouldn't have to think about it...]
[Mumbles out a quiet 'it's fine' but then just kind of slumps against him a little bit, breath shaky]
... There is a man here who looks like Merlin and yet isn't him. And he doesn't know me. Or anyone who looks like me. [...] Gwaine has arrived and he blames himself for my death, and his arrival only reminds Merlin of all his perceived mistakes and blames himself anew.
[Gestures weakly towards where the pyre is almost completely embers now]
And that... [it makes him think about death and funerals and everyone he's lost, everyone Merlin has lost. It makes him wonder what Guinevere and Camelot did in way of a 'funeral' since there was no body for them to mourn.]