Is it this one:
http://www.mangago.me/read-manga/hibi_chouchou/
Thanks for replying, but sadly it isn't... The girl has long black hair and I keep thinking her name is something around "Koumi".
Thanks for trying to help, but I think I just answered myself. I kept thinking her name was spelled "Koumi", but it was just "Komi".
This was the one I was looking for:
http://www.mangago.me/read-manga/komi_san_wa_komyusho_desu/
I have a feeling I've also read this manga before but can't remember the name.
Sorry, I couldn't help out. ╥﹏╥
Following! I'm interested in the manga. ヾ(❀╹◡╹)ﾉ~
Waahh! Again, sorry couldn't help out! ╥﹏╥ but I'm glad you found the manga (づ￣ ³￣)づ
In this manga, he attends a school that is full of weirdos, but he has a special skill which is to be able to understand a person well (I think?). The girl he helps is one of the most loved throughout the school, being very elegant and all that, though she has a slight problem, which is that she is unable to speak to others, so she doesn't have any friends, just fans. He then later talks with her when they were skipping PE and then wrote on the chalkboard and he promised to make her have 100 friends, and also becomes her friend so actually it's 99. Even so, this task is difficult because literally everyone in the school worship her like a goddess.
I know what it is by the cover, but I could never get my self to remember the titles of everything I read and I sadly didn't bookmark it.