1x21 - Boys Over Flowers

Tsukasa catches Tsukushi and Rui kissing. Back at school, he kicks Rui out of the F4 in a public fight. Tsukushi, who feels horrible for hurting Tsukasa, tries to apologize to him but he walks pass her. Later, Tsukushi breaks down and cries in front of Rui. He asks her out on a first date.