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...
It's a terrible idea to date 
a woman while deceiving her.
.مواعدة امرأة تخدعها فكرة فظيعة
Ich halte nichts davon,
Frauen auf diese Weise zu belügen.
No está bien engañar a mujeres
para tener relaciones.
No está bien engañar a mujeres
para tener relaciones.
C’est mal de charmer les femmes
avec un faux visage.
È una brutta cosa 
sedurre le donne con l'inganno.
Enganar uma mulher para
namorá-la é uma péssima ideia.
Лично я считаю,
что девушек обманывать нехорошо.