Also, in the narrative, he was apparently black out drunk, so he conveniently has no recollection and cannot defend himself.
Like seriously, what are you supposed to do if this happens to you? Someone you used to date comes out of the woodwork and accuses you of rape, in a form you wouldn't even remember.
How are you supposed to react to such a thing? How would you react if someone showed up at your work, accusing you of rape, demanding you be fired without trial?