"You lied to me-" the venom in his voice does nothing to shroud the pain behind his rage. You can see it in his eyes, like a stake through his heart. His fangs glint in the dim light, disgust curling at the edges of his lips. "You're just like Cazador."

You're not. You're nothing like that foul excuse of a creature. Astarion just wanted to get a rise out of you, to say whatever he could to hurt you the way he's hurting inside- that dull ever-present ache in his chest that he just can't soothe. But... lashing out makes him feel no better. In fact, the way your eyes glisten with unshed tears makes him feel worse.