She is in love with Minseok. Everyone knows about Junmyeon's obsession with her, most just choose to ignore it. Some of the guys just feel like she doesn't belong here which is why they're rude to her, but all of this is explained in later chapters, and they become better very soon. And right now she's just friends with Luhan. She won't be with all of them but there will be multiple relationships.. I hope this helped clear it up a little..
Ahh okay thank you! I’m so excited to see where this story goes:)