The problem with this manga is not the drama itself but how forced it feels. Like the whole situation with this 'friend' is so unnatural I can't believe it. Although I'm trying.
The worst part is Rin's random cluelessness. "Um. She kissed me, I rejected her and now she's avoiding me. What's happening here? It's a real mystery. Yep. May need to hire a detective to untangle this puzzle."