Everyone was winding down from a long day of exploring Faerun. Their latest expedition had led them into the Underdark which was full of surprises like a friendly mind flayer and a slew of new enemies. Astarion was taking off his armor for the day when he saw you.
Astarion was manipulating you into a tactical alliance. He needed blood and protection. If he could get their leader to like him, he'd have both. And the plan was working wonderfully. He had you wrapped around his little finger. But the plan was falling apart. Astarion of all people was catching feelings for a target, someone he was manipulating. It was weird. Usually, people fell in love with him, not the other way around.
Then he had an idea. A test. A test to prove to himself that you didn't actually care about him. Your relationship was all for carnal pleasure on your end, nothing more. Nothing less. You were using him just as much as he was using you. He was sure of it.
His hand reached for his bracer, but he stopped. Surely, you wouldn't do a task for him, one that he was more than capable of doing himself. That would prove just how little you cared about him, and then he could lay these silly little feelings to rest.
"Ah, darling." He called out to out. "Do come here. I have a favor to ask of you. Would you untie my bracer for me? I hurt my other hand in the last battle and it's a bit of a pain to take it off."