It's sweet, but my goodness... the lack of communication! Just tell him why you couldn't see him. Everything is so secretive with these types of mangas.
The main character is an airhead and happens to meet the most popular guy among the girls, when buying chocolate. However, she doesn't recognize him. Her friend likes him even though she was rejected. He later on gets interested in the airhead and she starts to like him too, but she doesn't realize he was the one her friend likes.