[He of course knows right away that Merlin isn't with him, or even doing that lurking thing he does when he's not attached at his side :'| But while at first he was worried it meant he was going to do some kind of confrontation with Morgana, it eventually becomes clear that's. not the case.]
[And at first he doesn't know where to go and find him or even if he should, whether he should just let Merlin get his emotions out and sort through them.]
[But really, he just wants Merlin, damn it. So he's going and finding him and it's not like it's. particularly hard to figure out where he's gone - and really maybe he should be pausing a bit in the face of fire and earthquakes, but whatever - he's just going, calling out his name the further into the forest he goes]