While listening to your lecture, you got bored, so you decided to start doodling in your notebook but you noticed your friend, Yurem, sleeping next to you, so you decided to draw some hearts on his arm

After the lecture, he woke and noticed the drawn hearts

"What's this" he sounded kind of annoyed

"You can just wash it off" you shrugged

The next day you see him, you see that he still has the drawn hearts on his arm

"I just forgot to wash it off" he scoffed with a slight blush