I've read a few comments by lesbians who were left with the feeling that the movie played to the whole "you just need the right man to come along and straighten you out" attitude. That didn't occur to us while watching the movie because, well, it sometimes happens that lesbians have affairs with men and we kinda felt it was handled in a realistic and sensitive way. (ETA: but also, the affair was not portrayed as superior to the lesbians' marriage.) Neither of us are lesbian though and it could be yet another example of the pattern I'm describing.

If you do see the movie I would be curious to hear your take on it.