Certainly this is a great example of judging a book by it's cover - the loud screamer SEX in the title is just misleading, obviously trying to attract a wider readership to what is a fairly dry approach to the subject.
The subject should be fascinating, but the (often somewhat convoluted and rather pompous) writing style makes it seem quite tedious. However, as I have only managed to read as far as chapter 4 in the several weeks since I bought it (it's almost as good as Nytol!) there is still plenty of time to improve.
It doesn't actually appear to be about sex (so far) - more a list of covert marriages that infuriated the Virgin Queen. I assume the reader has to infer what the moral attitude was from these examples or be already familiar with the period.
The preface was about Elizabethan beds which, while informative, was, I suppose, intended to be whimsical.
The author assumes that the reader already has pre-knowledge of the many (obscure to me) aristocrats he mentions, and their various marriages and ancestries. He sprinkles unattributed quotes throughout, too.
I'll carry on reading in the hope it gets more interesting, but I confess it's quite hard going for me.
****
I've now finished the book and while it did get a little more interesting as it plodded along my opinion hasn't changed much.