Disclaimer: I have not read the last few updates, but have a fairly accurate general memory from when I played a few months ago.
There is a point in the story (no spoilers) where you have to choose between Javier's plan and Rou's plan during a high-risk event, and the choice is pragmatic rather than romantic in nature. It is about whose plan of action you decide to trust in order to get a job done safely and efficiently, not who you want to choose as a dating sim. From the consequences of that decision, the event will end differently, which majorly affects how the rest of the plot will develop.
Unless something has changed in the last few updates, I had the impression that the route choice here does not follow the traditional 'pick a boyfriend' model. I hope that helps.