Kindle My Passion by Don Chiari

'Two helpless women swept up in a whirlwind passion of evil forbidden vice.' (as opposed, one imagines, to those whirlwind passions of *virtuous* forbidden vice). This one's got all the earmarks of great literature: a crumbling marriage that drives the protagonists to other people: the husband into the arms of another woman who has his child and loses it because of *her* peeping-tom husband's shenanigans, and the wife 'into the depraved arms of another woman.'