Losing the feelings. "I love y-" "Let's not see each other anymore."

Sunghoon was your boyfriend and you loved him so much until a new office worker, Jiwon, came to work next to your workplace. You started to have feelings for Jiwon and feel guilty to Sunghoon. One day, Sunghoon planned a date for both of you at a fancy restaurant and you decided to break up with him.