This is kind of brilliant. Props to Maria-sensei, she bumped up in my fave spots to number 2 behind Karin. It's essentially a way to make everything explicit. She's calling out all the players involved and is hoping to force Mei to actually deal with these people and their feelings. Will it go that way? Depends on if the author wants to actually move the story along or keep in the holding pattern it has been so far.
So it's okay for Mei to be fawning over multiple girls, but it's not okay for Karin to have multiple girls fawning over her?
This is really starting to aggravate me about this story. The hypocrisy that Mei is allowed to get away with just because she's main girl.
Mei does call herself out on it in chapter 27 internally, and they do talk about it in 28. I think the bigger problem is that Mei isn't actually in love with any of these girls, just really attracted to them. She can call that love if she wants, but all the relationships seems really shallow right now.