I need to remember the name of this manga

Hi ppl! First things first I'd like to apologize for any english mistakes (not my mother tongue).
So, a couple of years ago I read this manga that was about a cold hearted girl that was a novel writter, but she never experienced love, kisses or anything like that before, so she couldn't write about it. Then she decide to use a boy as her form to learn those things, they kiss etc and she take notes from the sensation. I remember her wearing simple glasses, havin' bangs and a long brunnette hair. If someone knows the name pleeeeease I need to know or else ill die please please, if you know just tell me :(