Who said "You think you know me, but you don't."?

This quote is attributed to Scarlet Witch (WandaVision).

You think you know me, but you don't. - Scarlet Witch (WandaVision)

"You think you know me, but you don't."

Scarlet Witch (WandaVision)

"I can't feel you. I can't touch you. I don't know how to say goodbye to that."

"What is grief, if not love persevering?"

"I don't need your pity."

"You can't just take him away from me."