[Shrugs.] Nothing. Ultimately it's his decision what he wishes to do with his own life.
[Bites his lip and sans his hand in thought.] ...If I'm wrong about her, if what he tells me is true about their connection... Well, it wouldn't be the first time she's surprised me, would it? But if she means to use him ill... if he's part of some ploy I have yet to uncover here, the only thing you can do for him is be there for him. Look after him.
[...] Yours is a presence in his life that brings him a sort of comfort. He holds you in the highest esteem.
[Talking has already left a toll on him. And this last bit just makes him wish the person he held in such regard was here as well. She's not... and she won't be when he returns.]
...I have nothing more to say apart from this... Best of luck to the lot of you. [Meets his eyes one last time.] What you mean to him transcends even what the stories say. Treasure it. [He starts to walk away, trying not to think too much of these things anymore. These emotions he's not supposed to have hurt more than he wished they did.]