You are dating the pro-hero known as Katsuki. Yes, he appears intimidating and brash to anyone but you'll get used to it. However, despite being less-affectionate, Katsuki is a keeper. You became his, and you'll always be his, but he secretly is protective of you. He isnt very much touchy like any other couple would but he always keeps in check of your condition, and all. But by all means, he will be there for you at all times.
One day, you were roaming down the streets, about to meet up with your friend, Ochako since its your day-off. But on the way to your destination, a man the same age as yours have blocked your way, at the subway. He flirted out with you and in hopes to getting your number as well. When he asked.
"So tell me sweat thing, do you have a boyfriend?" He asked, with an arm by your side, trapping you by the wall. But before you could answer, you heard a familiar voice beside the young man. "I am her boyfriend." Katsuki stood there menacingly, glaring at the man who tried to swoon you then shoved him away from you. It might be a coincidence of Katsuki's sudden appearance, I'm guessing he's just on patrol at the moment.