Wonderful to see a woman asking questions about the many inconsistencies prevalent in today's Man-Woman relationships.
..."women can now retroactively declare they never truly agreed to specific sexual acts, even whole relationships." Welll  gee, That's nothing new. Women/girls have always done this!

The first time I encountered this I was in Middle School! A girl had attended a party, got drunk, had sex, and the following school day later, after it was all over school, she said, "I didn't know what I was doing". Most people did not believe it.  As a young man, I too imbibed too much alcohol, but I Never did Not know What I was doing!  I saw this excuse (and others) used though out my scholastic career. 

We are told that a girl is a woman @18, but then this is never enough! Now the college girls are being programmed to have ZERO responsibility and declaring AT ANY TIME "I didn't know what I was doing". No wonder so many young men have embraced "MGTOW"!