I think the author sells herself short with this title - it's more of a quadrangle than a triangle. No, wait ... yes, it's a pentagon! Hell, everyone fancies/loves/shags everyone else - man, woman or (possibly)dog - in this dollop of ridiculousness. The initial romantic/sexual encounter of the 3 corners of the titular triangle is so weird, titillating rather than erotic and, like everything else in this book, totally & utterly unbelievable.