I read this a long time ago and saved it to my library but i cant find it anywhere.
This is all i remenber
It is about two boys who like each other but wont tell each other.
A girl tells one of the boys (lets call him A) that she likes the other guy( lets call him B) and she going to confess.
She goes to confess but gets stopped by guy (A)and the other guy (B) sees them talking and thinks they are together and gets jealous.

Kodomo no Iibun or any of the mainichi seitien series?

thanks, but it is not it.