I hate this manager already. He's disgusting. From the spoilers I read in the comments this asshole apparently kissed the brown hair despite knowing he's taken and then even tried to break them apart?? Idgaf whatever backstory he might have if youre pursuing someone in a relarionship you're disgusting. Imagine being a filthy vile homewrecker and ruining others' happiness because you can't have your own.
Most sickening disgusting shit I've read