[ "I don't know" is Astarionese for "it's somewhat unpleasant, and I don't want to think about it". Iorveth had found it exasperating in certain contexts, his kneejerk reaction being "you can't just avoid thinking about something forever", but he understands the hesitation― Astarion is allowed to have had enough of being claimed― and chooses not to press, even when he's told that the reciprocal ring is still on the table.

Won't stop him from adding more praise onto the pile, though. If he won't indulge Astarion tonight, then when? ]

Seeing how beautiful you are in one, everyone else in all the realms would remove their own rings in shame.

[ Ridiculous. Iorveth laughs at the theater of it, then kisses another mark along Astarion's jaw. Savoring him, and soothing the redness with his tongue after he's done. ]

When you feel ready, perhaps. [ He hums. ] I would wait lifetimes for you.