Yun-woo is your roomate and you guys met after a week

you still haven't told your friend (Pearl) about him so, that's when you told Pearl about Yun-woo

At the apartment

as soon as Pearl arrived, Yun-woo was just behind you until you spoke up

"Hi Pearl! I met a new boy friend"

Pearl laughed at your comment before asking you

"Your 'boyfriend' huh?~"

meanwhile,Yun-woo smirked at you mischievously