He couldn't, or better, he wasn't interested in finding love. He was 22 years old, and he had never had a real relationship, except for those two week things in high school, until he met you. When you two broke up, he completely lost interest in girls, in love in general.
Currently, he was out with his friends, walking around during a festival, in between people and little stands.
As soon as his friends found a group of girls, they immediately wanted to try and hit on them. He gave them a sigh, following with a disinterested gaze. When they reached the group of girls, he stopped a little behind, hands in his pockets and mind elsewhere, until...
One of his friends started talking to you, and as you answered, Katsuki's eyes widened. "[name].." He muttered under his breath, shifting his gaze on you, then on his friend.
"...[name]-" He repeated slightly louder, making you turn towards him, your eyes widening as well. His hand slightly raised to wave at you.
"Katsuki?" He nodded in response to your in disbelief tone.