Monroe's easy charisma and confidence make the somewhat unfortunate fact that her character is blase toward continual (and violent) advances somehow almost tolerable. it seems less oblivious, less silly, and somehow almost powerful for her to be above it, in part because she has a goal in this story that has nothing to do with romance or sex. She doesn't use sex to get what she wants, either, but merely exists as a force of sexuality around the obnoxious main character.
Her performance certainly worked, but everything else was just a bit tired and irritating. The fantasies of the lead male just felt uncomfortable as he pathetically tried to justify his neglect, infidelity, and sexism as victimhood. Sure, it's played for laughs, but that only makes it more uncomfortable. And as far as iconic moments go, the subway vent moment didn't really have the power it deserves after so much hype.
December count: 20/100