[Discussion] Miyu-chan wa Zutto Tomodachi / Miyu-chan Will Always Be Your Friend - Ch. 9
Read Miyu-chan wa Zutto Tomodachi Ch. 9 "A Girl With Many Loves" on MangaDex!
All sorts of possible flags there, but nothing definitive.
If this new girl falls in love easily, does it also mean she becomes enraged with jealousy easily? I kind of doubt it. Frankly, it's too early in the series to solve anything.