Though Yukimura and Himuro went as far as to kiss for the experiment, they were soundly beaten by Chris and Suiu's oxytocin levels in their saliva. Panicked, Yukimura suggests that they conduct control experiments. However, in the midst of the Yukimura/Suiu pairing, Suiu's seductive manner ends up causing Yukimura to ogle her charms. Seeing that, Himuro runs another experiment with Yukimura, but ends up sulking. The two end up having a lover's quarrel. Yukimura's behavior causes Chris to look down at him coldly and say, "As a man, you are a failure."
Didn't he basically just 
say that he loves her?
!ألم يقرّ للتوّ أنه يحبها؟
Hat er ihr nicht gerade
seine Liebe gestanden?
Técnicamente,
¿no acaba de decir que sí la ama?
Técnicamente,
¿no acaba de decir que la ama?
C’est une façon détournée
de dire qu’il l’aime !
Non le ha praticamente detto che la ama?
Mas isso basicamente não é
a mesma coisa que dizer que ama?
Он же только что взял и
признался в любви!