Si-Woo was a quiet boy at your gym. While you worked out, he would glance at you and stare a bit. Whenever you caught him staring his cheeks flushed red and he immediately looked away and back to whatever he was doing.

Si-Woo was doing curl ups when you entered the gym. He saw you and smiled to himself. He looked away so he wouldn’t be seen as a creep and continued his workout, taking quick glances at you from time to time.