You said you'd never leave.
2 seconds sound clip from the Beauty and the Beast: The Enchanted Christmas movie soundboard.
You can hear this line at 00:51:58.873 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, Chip, thank goodness you're safe.
- Oh, no, what have I done? It's all my fault.
- We all share some blame, mon ami, for daring to hope for a Christmas.
- I wasn't trying to leave. I just wanted to make you happy.
- You broke your word. And for that, you will rot in this dungeon forever.
- I should have known you'd never be anything but a beast.
[...]