I'm trying to remember the name of this manga , it is set in high school and i remember that the school or the student council were forbidding relationships (or even talking maybe ) between female and male students , and then there is a boy and a girl that like each other and that's all i can remember.

thanks for the help ^_^

Atashi no Mannaka, maybe?

no thats not the one

That happened around volume 3/4 of renai shijou shugi, I think.

Try the 4th story of Dokyusei H kara Hajimaru Koi.

Lovey Dovey

Ren'ai Cupid?