After explaining all this, Rochester claims that he’s not really married because his relationship with Bertha isn’t a real marriage. The main problem is that he can’t divorce her (because it was pretty tough to get a divorce at all in the Victorian period, and Bertha’s behavior isn’t grounds for a divorce, since she’s mentally ill and therefore not responsible for her actions). He wants Jane to go and live with him in France, where they can pretend to be a married couple and act like husband and wife. Jane refuses to be his next mistress and runs away before she’s tempted to agree.