[This revelations definitely catches him off-guard. Aether straightens his back, his eyes are wide.]

You're dating Thoma... and Diluc both?

[Before he can ask something rude like "and they know about this, right?" he stops himself. Ori has been nothing but kind and friendly. She said she cares about Thoma and Diluc both, so Aether has no reason to assume that she's hiding something from them. She even seems shy about admitting to this relationship, so the traveler immediately feels bad. Still, he can't help being protective of his friends, even if those friends don't remember him.]

S-sorry, you surprised me. [He waves his hand a little.] I'm just... trying to understand what is the relationship between the three of you.

[Is it only her dating the two of them or...?]