I'm looking for a manga . Is about this to kids male and female they know each other since they were little and the are neighbors. But for some reason the guy ends up pushing the girl away and she don't understand why... But in reality he likes her and they go to the same school and act like strangers... If it help he use glasses and is tall with black hair

Sounds like Watashi no... Megane-kun

I don't really want to say this but there are a lot of manga have the same scenario. Wonder if some authors are lack of creativity