The years passed, mankind became stupider at a frightening rate. Some had high hopes the genetic engineering would correct this trend in evolution, but sadly the greatest minds and resources where focused on conquering hair loss and prolonging erections.
Much more likely that the guy had some trait that she didn’t like that was much more hurtful and/or she knew the guy would not react to being told about the trait well. Better to just confuse the guy with some arbitrary insult and cut the relationship off.