In reading "Jane Eyre", how do you get over the fact that Mr. Rochester told Jane that he was going to marry Blanche, and send her and Adele away, up to literally seconds before he proposes to her?
You don’t “get over it.” You accept it as part of the story and part of a deeply flawed man’s personality. He did a shitty thing. A lot of the book is about Rochester learning to adjust his shitty behavior and Jane learning she loves him even though she’s been the victim of his shitty behavior more than once. It’s about contrition and forgiveness. Jane Eyre isn’t fluff romance where you’re just supposed to love everyone and watch them make heart eyes at each other across a coffee shop. Real stories have real problems if you just try to “get over them” the work will lose a lot of its impact.