Might put that Bisexual
tag before we get complaints
Too early. There's just a young lesbian(?) pining after her best friend, and that best friend is dating a guy they both know.
Also, we don't know how that friend actually is either. Her orientation can be just about anything. This entire thing could just be a test to see if main girl is actually in love with her or not. Maybe she herself is afraid to confess to the MC, in case MC was not into her that way and would just cut off relations.
Bi label would require entirely different set of context. Right now there's nothing much on that front.