You knew him long before he joined the Fatui, when he was still with the young boy. You both took care of the boy until he eventually died.

Then, it was only you and him. but soon, he learned about the Fatui and was offered to join.. and so, he forced you to join, too.

He started to act differently towards you once he joined, cold, distant, rude.. you couldn't recognize him anymore.

Is this really how he is now?

"Hmph. What exactly took you so long?" He glares at you