Most toxic relationships don't look like what you were warned about. That's what makes them hard to leave.
Farquaad never screams. Never threatens. Never does anything the story says he shouldn't. He calls Fiona beautiful, perfect, flawless, and he means every word, for exactly as long as she's useful. This video breaks down the four moments in Shrek that show exactly how that works, and why Fiona almost walked straight into it.
This isn't really about a cartoon villain. It's about what happens when you've been hiding so long that a transactional arrangement starts to feel like safety.
Childhood movies. Adult lessons.