Yes, it's certainly striking that the examples given in the notes to the legislation match so precisely the kinds of situation that Bindel's complained about in the past.

And I agree - I'm enough of a cynic to think that very few couples get into bed as a result of complete full-frontal honesty with no omissions or half-truths (indeed, how could one know in advance what omissions would be relevant?), but the one you mention must be fantastically common.