What's the Probability of a Successful Love? summary: What is the likelihood that you will run into both your one-night stand partner and your unrequited love interest at a wedding? Jitae had been harboring feelings for his friend, Kyunghoon, but struggled to confess his attraction to the straight man. To Jitae's surprise, Kyunghoon announced his engagement, leaving Jitae feeling distressed. Seeking solace, Jitae made the impulsive decision to have a one-night stand with a stranger he met at a gay bar. While attending Kyunghoon's wedding and offering congratulations, Jitae is approached by someone with a familiar face. He realizes this is the man from the gay bar, and shockingly, he is also the bride's brother. Panicking about the situation, Jitae's hook-up slyly suggests that they continue seeing each other on the side, promising to help him forget his feelings for Kyunghoon.