@Minlani Nothing to be confused about. It's already confirmed in chapter 131 that the pink hair girl/guy is in love with the Prince. And with all their kiss scenes, I think the author is trying to go in that direction with him. As for the black hair girl, she's already being paired up with that other Black hair prince. So the future looks bleak for those two (pink and black hair girl) to be together.
Conclusion? There will be three (?) official couples in the end. Pink Girl/guy x White Hair Prince. Black Hair girl x Black Hair Prince. Purple Hair guy/girl x Blue Hair Guy. The path is pretty clear in that aspect by how the author of this manhua kept pushing for "
that" type of story.