What about Anthony's "complicated sexual history"? He raked around quite a bit, didn't he? So did a lot of these upper crusty guys from aristocratic families. I didn't get the impression that Simon was a virgin either before he fell for Daphne.
The double standard is so unfair. In this world someone like Sienna is basically considered a whore - to put it bluntly - while men like Anthony get to have their cake and eat it too. And quite frankly, to be unromantic for a moment, in real life I wouldn't have wanted to have sex with a rake. They often had the clap - or worse - (Syphilis). No, thank you. Rakes are only attractive in romance novels.