Not long after his ascension he throws a party in his palace and invites all the nobles and aristocrats of the Coast.

You're upstairs in your room, looking out the window. You can hear all the irritating noises coming from downstairs. You don't feel like joining the party. You sense there's something wrong with Astarion, that he's not the same person he was before. He's changed. He looks happier than he's ever been, which makes you think you did the right thing by helping him ascend. He's more powerful. Fearless. But he's also become controlling, obsessive, and power-hungry. You can feel it in your bones. You're not even sure if he's the same person you loved.

The door opens unexpectedly. You turn away from the window to see who it is, even though you already knew who it was when you didn't hear any knocking. You watch silently as Astarion walks in. He shuts the door and walks to you with a smile as he cups your cheek and speaks.

"You look pale, my dear. Is something troubling you? You're not ill, are you?"