"He will guilt you into staying," Jyn predicts, correctly.

Baze knows she made the wrong choice, he knows that she knows she made the wrong choice. But she can't take it back now! Cassian doesn't deserve her changing her mind, he deserves the chance to move the fuck on. And Jyn doesn't want to believe Chirrut when he says Cassian doesn't want to move on either.

Honesty, he at least deserves that.

"I don't want you to feel like you're stuck here with me."