Well… She writes, “I moved right in with David after I left my husband.” And, “I clung to David for escape from marriage as if he were the last helicopter pulling out of Saigon.” You make it sound like taking a lover was completely unrelated to her divorce, but she certainly didn’t take any time to lick her wounds, now did she? Certainly divorce proceedings would’ve been complicated by his presence in her life–and her presence in his bed.
(As others have said, think of the reaction to men who walk out on their wives and immediately start fucking somebody else, showing no interest whatever in trying to patch the marriage back together. Lots of sympathy for the wife, lots of anger at the husband, and a general sense that the wife is entitled to whatever she can get from him. Also, I would guess a deep suspicion about the husband’s claim that he didn’t start seeing anyone until AFTER he left his wife. “Scout’s honor! It was at least a WEEK after I moved out!”)
I don’t know what Gilbert is like in real life, and I haven’t seen the movie, but I do have a problem with the way she casts herself in the book. “I won’t open any of that,” she says high-mindedly with regard to why she left her husband, and then just a few pages later opens it up after all, and in a way designed to make him seem mean and petty and toddler-like:
“…communications reminding me of what a criminal jerk I was.”
“He let me know that I was a liar and a traitor and he hated me and would never speak to me again.”
Especially when she doesn’t reveal the things she may have said to him (is it really possible that she remained pure of motive and friendly of speech throughout?). Look, either discuss it fairly or don’t discuss it at all, but it’s really not okay to say you won’t discuss it and then proceed to do exactly that, putting someone else in a very bad light.
That said, I very much liked the scene on the bathroom floor (in the book). Too bad she came across in most of the rest of the book as so very whiny, self-centered, and mean-spirited, because she surely can write.