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...
If you value your life, don't trust anyone.
.إن كنت تقدّر حياتك، فلا تثق بأيّ أحد
Wenn dir was am Leben liegt,
darfst du niemandem vertrauen.
Si aprecias tu vida,
no puedes confiar en nadie.
Si aprecias tu vida,
no puedes confiar en nadie.
Si tu tiens à la vie,
ne te fie à personne.
Se ci tieni alla vita, non fidarti di nessuno.
Se tiver valor pela vida,
não confie em ninguém.
Не верь никому,
если на тот свет не хочется.