Mark had called four times and left 30 texts. He was probably scared that Donghyuck had left and found someone else to kiss. He was possessive that way.
Donghyuck didn't care, Mark did not own him, he had no say in anything Donghyuck did. He could do whatever and whoever he wanted; Mark could not do anything about it.
He smirked to himself as he browsed the library with Renjun. Renjun was busy studying for his psych exam, which left Donghyuck to pull out books on the one topic he was truly passionate about; Greek mythology.
His phone was left at home so that Mark could not distract him, and Renjun was too busy with his stuff to bother Donghyuck, it was his one time in peace to forget the world.
While Poseidon and Athena were competing for the people of Athens—clearly we know who won...— the doors to the library burst open and Mark came storming in, he was on the lookout.
Donghyuck wasn't worried though, no one really knew of his obsession—it wasn't a secret, no one cared enough to ask—so the likelihood of Mark coming to the mythology section was slim.
He met Renjun's gaze, a silent agreement formed. When Mark asked Renjun where Donghyuck was, he said no.