He’s Just Not That Into You was a 2009 romantic comedy that explored why relationships fail or succeed, and why a romantic pairing that appears to have “worked” for years suddenly stops working for one of the partners, whether it’s the man “falling out of love” with the woman or vice versa.
In the various couple-scenarios trotted out by the movie’s producers, it apparently never once occurred to them to introduce one in which the woman was on hormone-based birth control when she first became attracted to her future life partner, then stopped using the pill once they had committed to each other.
Maybe research into all “the pill’s” many side effects wasn’t quite there in 2009.