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 we decode this message...
...إن فككنا شيفرة هذه الرّسالة
Neu entschlüsselt sieht man,
Con el otro cifrado parece una carta
de Barnes a un médico de hemorroides.
Con el otro cifrado parece una carta
de Barnes a un médico de hemorroides.
En le redéchiffrant bien,
Decifrando nuovamente la lettera...
Ao decifrar a mensagem...
Перечитаем-ка всё заново…