They obviously like each other and the MC is liking her more and more, however she wants new members for the club. This is when you think its going to f*cked up. For her to have a new member, this new girl she's trying to recruit likes the MC and directly asked their relationship. Though left ambiguous on why new girl asked what their relationship was, it's obvious she likes MC and wants to be with him. However the MC asked out the girl he likes but she lied and didn't go and instead push the new girl unto him. That's pretty f*cked up and idk if she's selfish or not for doing this as she's putting the club above him. But this new girl seeing how MC likes this girl, at first it looks like she's not going to join but then with new resolve she decides to fight for MC and in the end join the club.
I really like this. Though I hate Love Triangles, this one was actually not bad.
To the point i admired this new girl and wanted to cheer for her.