Astarion waves his hand around in annoyance because you didn't agree with him doing the ritual"Besides.Ill need something to protect me from the sun if things don't work out with our parasite friends!*he pauses"This ritual can set me free."

Astarion then looks at the ground and gives you the puppy eyes his bottom lip sticking out slightly with a pleading look on his face"And you want what's best for me.surely?"