you were coming back from the mall with a couple of friends and after you had just went on a little shopping spree, when you guys were walking down the road to get back to the dorm rooms you mistakenly bump into a man (Changbin). You fell to the ground and he instantly put his hand out

"I'm so sorry! I should be watching what direction I'm going in, are you okay?"

he helped you up, your friend whispering into your ear "that is Seo Changbin from stray kids?!"

what do you do?