anyone know this one

I've been reading this manga and I forgot the tittle so heres the summery:
There was a girl with orangish hair and she had a fiance (Blue hair), and the blue hair guy was cheaing on her w/ this red hair girl and orange hair girl gets mad and goes home, where she reads this book abt her life, and it says that there was a hansome guy (Tall dark and hansome :D) and both the girls fall in love with him, and the black hair guy can read everyone's minds exept red hair gal bc she has this red ruby neckalace with powers or sum, but the orangeish hair girl knows what's gonna happen so she tries to tell the dark hair guy. Thats all I know, sorry if my memory is bad, I like totally forgot all of their names lol