I was a bit miffed at the idea that it was somehow normal to want to sleep with the donor of your child. Not least because my mother told me after my first child was born that 'all women want to gave sex with a man after having children' (I think she rembered that rather wrong, myself, I think an awful lot of hets scream 'never again' during childbirth). Anyway, I have met my child's donor and did not sleep with him, nor want to, but the film made me feel everyone would think I would want to, which added to the stress of the whole thing even more.
And I am not convinced that it's massively common for lesbians to watch gay male porn either. I don't discuss this with any lesbians any more but in my younger days I did and no-one I knew talked about it back then, and no-one I have ever known 'intimately' has ever suggested it either. So apart from the fact they say it's normal in this one film which has been viewed by millions, does anyone remember just 'knowing' it was common before the film came out?
But yes, Wolfie, their marital sex and relationship in general had gone a bit off the boil and things can happen. Even that could happen in real life, but it bothered me a bit because so much of it did seem credible, and it was watched by loads of straight people, who may have assumed that this was typical. That is the danger still because there are still very few mainstream films about lesbians. No one thinks all straight people are 'like in that film' because there are so so so many films about straight people.