My True Love Is My Boyfriend's Brother

[Sexy underclassman + cool, aloof, scheming upperclassman] After Cui Cheng discovers that her boyfriend is cheating, she finds an upperclassman to get back at the scumbag. She later learns that the upperclassman is the scumbag’s friend, but he fell for Cui Cheng at first sight. He uses every means at his disposal to make the heroine fall for him, even becoming friends with the scumbag... At last, through his persistent efforts, he and the heroine live happily together.