First Love, AgainEpisode 4

When Emma Carter is asked to deal with her younger brother's school romance, she's stunned to discover that his homeroom teacher is none other than her high school first love, Ethan Brooks. Seven years earlier, Emma abruptly ended their relationship after pretending to fall for her childhood friend, Ryan Parker. Now reunited, Ethan still hasn't forgotten her. As their lives become intertwined once more, they slowly realize that neither of them ever truly moved on from their first love.