First, the main character does not seem terribly interested in his wife. Second, while he was never more than sexually attracted to Mouche, he’s grown to despise her as well now that he can’t get away from her because of the trip into the jungle. And now there is Rosario.
Out ‘hero’ does not like women very much. In Mouche, he sees everything petty and vain.
I’m not sure if the author does too.