Feminism is in

"When men get married, it's like they're buying a home they want to retire in. But when women get married, they're just buying a flashy car and once it breaks down, they go out for a new model"
Whoa! Settle down mate. I find that statement offensive and incredibly sexist. I think if you looked into those statistics a little more you might find that generally men are a lot more likely to stray and that's probably why more woman initiate divorce.

Can you please explain to me how Lou was being "horrendously insensitive to Margot's sexual development"? Is it because he wouldn't accept her threesome fetishes?

It's fun to reread this after more than a year.

"It's an age old trouble, the anxiety of men about women's sexuality. I can't quite puzzle it out, as I come from the female end of things. It would seem mutually beneficial for everyone that women are happy and unencumbered by fear or shame."

I think it may be the case that most people are responding to their preconception of a "slippery slope" when facing ideas to which they have some ideological or physiological aversion. This includes me. The anxiety I experience when thinking of the free expression of female sexuality, and when thinking of Margot, resembles a kind of paranoia that my girlfriend and perhaps a generality of women will be encouraged to be dominated by their baser sexual inclinations that overwhelm their disposition to be devoted, faithful, and supportive. (Note that I'm only describing my own physiological response, that is, the way I feel and think in response to deep emotions that I have. This is not an objective view of what actually occurs in general). This is what I perceive to have happened with Margot. She was faithful, felt sexual chemistry for Daniel and chose to behave in a way that I understand is cheating due to that sexual chemistry.

"I think it might come from men's shame about their own baser nature??
Have you ever seen the show Louie? He does a little routine slightly related to this, basically saying that every man has salacious and lewd thoughts about every woman he encounters. And even if he is a good and decent person and says beautiful romantic things, the second unspoken half of the sentence is explicit.
Is that the fear for men? That this idealized woman you love might be as base and crude as your own thoughts? Here I use the universal "you", not you."

I honestly have no clue if male sexuality, like you describe, correlates with what I describe; feeling threatened by the notion of freely expressed female sexuality. I don't know if this is true for everyone, but for me, I both want to cheat on my girlfriend, and I don't want to cheat on my girlfriend. If I do cheat, I consider that to be behaving according to my base inclinations. Remaining faithful in a committed relationship is a behavior related to our ability for abstraction; do to others as you would have them do to you. Because we want committed, exclusive partners to be devoted to us, we remain devoted. I imagine this is true for everyone, yes? Women have base, sexual inclinations that if acted upon violate a monogamous agreement. I'm not saying that what I'm describing fully encompasses the ideas elicited by this movie or this topic; I'm just curious to see what people say in response.

I really do like this movie, too because it has really evoked a lot of discussion and emotion from people on some sensitive issues. I think there are women who are cashing in on the "female sexual expression" movement, and Sarah Polley is deserving among them.