Dating shouldnt feel doubt feel bad
REAL men will respect a no, and it's likely that many men who make sexual passes at women they barely know are not only surprised but even disappointed when the answer is yes.
The author said nothing of how he felt, so you claiming hypocrisy seems inappropriate. There's also a biological basis for women cheating around the time of ovulation. I see an easy women as one who has become comfortable with sex, just like many men are.
As a woman who continues to find ways to feel more empowered, you may in turn become more aware of your needs and desires and feel more free to act on them, regardless of how early they emerge in a potential relationship.