I know that you and Anoukange have had other disagreements in the past so you know, and I know, that she is nowhere near having a clue about how someone should behave after sex.
There truly is no ‘proper’ way to behave after sex. Some people really do enjoy having sex and then leaving their partner (and not cuddling) this isn’t wrong per se, it is just not the way that you (or I, for that matter) want to be treated; it would feel awkward and cold.
I believe that people–man and woman–for the most part leave their partners after sex, whether they leave the apartment or just leave the bedroom–assuming they don’t have any place that they need to be–are most often running from intimacy. As any adult knows sex doesn’t not necessarily come along with intimacy and leaving in the wake of orgasmic bliss is a way of avoiding that intimacy that might sneak up on you while laying there half-awake with someone.