Shoujo

Does anyone know this shoujo manga.
It is set in school. 2 girls are best friends, I'll call them A n B. A is pretty n is always confessed by boys while B is plain n shy. A gives condition to the boy who confessed that if they date, B must come also. But every guy doesn't even remember who B is so A rejects them.
One day, this C guy confessed n was rejected for the same reason. C talk to his friend D about how he was rejected n felt sad. D felt that A was arrogant n just used her friend as a reason to reject any confession. So D harassed B.
After sometime, D found out that B is a kind hearted person n fell in love with her. But A always interrupt D's flirting attempt towards B. But eventually A approves D bcuz he knows the true value of B.