This could be a great manga, just imagine two beautiful, cute and hot girlfriends teaching how to love to the newcomer and help her with photos, but NO you choose the drama path tsk tsk.
Tbh I don't think Nene deserves Amane. I would rather prefer she end up with Hayama senpai.
Nene is just so cruel and irrational, and still we don't know why she acts like shit with Amane. I wonder what could happen so things change overnight, when you were love dovey with your lover and then they start threating you like shit.