Spoilers
From the raws, and using google translate. I can't be 100 percent sure though of the context, and what is going on in all the other chapters, as I did not go through all of them with google translate. All I know is the blonde says "I like you!" to the purple haired guy in one scene in chapter 29, but it seems that they had some cute moments in previous chapters.
It's an issue of monitor color calibration. For me it's a blue haired guy instead of purple, & mousy brown/dishwater blonde.

Spoilers (kinda)
It looks like this will be a slow burn romance... not that that's a bad thing. I peaked at the raws, and it seems like we won't get a confession until chapter 29.