I'm pretty sure what's happened here is that the MC has picked up on her friends feelings via projection. That is, she's in love with the friend, but doesn't realize it/is in denial over it and hence is projecting that her friend is in love with her. This so happens to be correct, but the MC's friend is sort of aware that she is projecting and hence is not confident enough to be honest about her own feelings towards the MC.
Then again maybe this analysis is far too sophisticated for this manga. Not to mention, not entirely sure that I managed to make sense with this post. :V
last edited at Mar 4, 2020 3:20PM