“Chani…she will be Paul’s right arm, she will be Paul’s soul.” - Denis Villeneuve.

so this scene is basically Paul seeing his soul leaves, his last shred of humanity :

😭 😭

Think on it Chani: that princess will have that name, yet she'll live as less than a concubine - never to know a moment of tenderness from the man to whom she's bound. While we Chani, we who carry the name of concubine, history will call us wives - Lady Jessica to Chani.