Yukimura is working hard on his computer, as usual, when Himuro suddenly says, "I am in love with you. Her confession greatly shakes Yukimura. Unlike the last time, Himuro states her feelings matter-of-factly. Yukimura asks, "What theory did you use to determine that you love me?" Himuro replies by taking Yukimura out on a date and begins performing experiments they've done before such as measuring heart rates, using an emotion counter, collecting saliva, and the kiss experiment.
Then can't you just decide the 
other things yourselves, too?
ألا يمكنكما تقرير الأمور الأخرى بأنفسكم أيضا؟
Könnt ihr dann auch nicht in anderen
Aspekten beliebig entscheiden?
En ese caso, ¿no podrían decidir
lo otro ustedes también?
En ese caso, ¿no podríais decidir
lo otro vosotros también?
Allora non potete decidere
anche le altre cose da soli?
Então não podem decidir isso aí também?
Тогда почему бы и остальное
не решать самим?