I remember to read that she was also jealous of a gipsy mistress that he had
I've been reading again I book I have on Napoleon and Eugenie, and found nothing about this. I think it's unlikely because at that time gipsies were considered really low class.
About Eugenie, I think that her feelings were not jealousy, but humilliation and disgust instead. She was humilliated by her husband's affaires because all the court gossiped about them, and she wanted to be respected since she was the empress. For instance, Napoleon began his relationship with the countess of Castiglione when Eugenie was in the last stages of her pregnancy, and it lasted for about a year. What woman wouldn't be angry? And disgust, because she didn' t like the idea of sex, as Katy said before, and couldn't understand how Napoleon couldn't refrain his sexual impulses. He was a very sex driven man. She once said that she didn't understand how men could be thinking all the time in IT, and that all men were the same. Eugenie had a very romantic idea of love, for her it was something spiritual rather than physical.
I've also read something interesting: Eugenie's first love, his later brother in law the duke of Alba, was asexual, he had no interest in sex, and was described as "ethereal". Unfortunately the book doesn't cite any sources on this.
Other important mistresses were the actress Rachel, the english Mrs Howard, Marguerite Bellanger, Louise de Mercy-Argenteau, and Countess Walewska, his cousin Walewski's wife. This woman apparently was very manipulative and conniving, and she presented herself to Eugenie as a true friend while having an affair with Napoleon, and cared nothing about being caught; even Walewski found both of them in inappropiate circunstances more than once.
