In order to prove to Yuri that they are actually a married couple, Loid and Yor are supposed to kiss. Loid is willing to get this done immediately for the sake of Operation Strix, but Yor can't do this sober, so she ends up downing a bunch of wine and gets drunk.  Yuri sees his sister this way, also gets drunk, and is unable to make rational decisions anymore...
but I guess Yor has really 
never dated a man before.
.لكن أظنّ أنّ يور لم تواعد رجلاً من قبل
aber offenbar hat Yor wirklich
keine Erfahrung mit anderen Männern.
Así que Yor no tiene experiencia
con tener pareja.
Así que Yor no tiene experiencia
con tener pareja.
mais Yor n’a donc aucune expérience
avec les hommes.
però a quanto pare Yor non ha mai avuto 
una relazione sentimentale con un uomo.
mas parece que a Yor
realmente nunca namorou.
но у Йор и правда
прежде не было опыта с мужчинами.