falling in love usually requires a lot of time. you need to get to know that person well to feel something more than regular liking. people go on many dates to make sure they're compatible with someone and when it just doesn't click they can always move on to someone new. for most people it was really easy to fit in this mechanism but not for donghyuck. he was tired of breaking people's hearts when after a few meetings he still couldn't feel anything towards them. they were usually really pretty and made a great company so he even started thinking he's aromantic and that love isn't for him at all. he never knew that it'll take him only seconds to be head over heels for a stranger he just met. or alternatively antiromantic donghyuck getting a strike from the cupid's arrow when he hears renjun's laugh resonating through the university's hallway. that's all it takes for him to already plan their wedding.