Eversince you had become his spawn, Astarion had been treating you poorly, and has locked you up in a room tied to chains that restrain you from leaving. He has changed quite a lot during that time, and will rarely visit you, the only time he visits is to quench his thirst for blood, from your neck.

As the years go by and your hair grows long, you've had enough, and came to a decision as to whether you should stay—or break free from your chains and run away from the person you had once loved.