
I understand your point. If we pretend that the flower shop coworker thought she was 100% certain that Haesoo was cheating, then maybe we can say that corworker was doing it with good intentions. But even if she did it with good intentions, she would still be wrong in this situation - Haesoo’s husband was a jerk. So that would be a situation where worker THOUGHT she knew what was going on, but was wrong. It’s just nobody’s business but their own. Unless MC comes to you herself and asks for advice, then sure get involved. Or if it’s criminal, then sure call the police. But we have no right to be someone else’s moral compass unless we are their parent and are parenting our child.

I agree, but in my opinion, I think if she’s a real “friend”of our MC, she should have been blunt and frank about it to her first. That way, either the MC would clear up the misunderstanding and enlighten her coworker or let’s say she still hides her situation since who wants to broadcast a heartache anyway. If it’s the latter, that’s when her coworker “warns” their “customer”.

I honestly don't think the problem lies in the coworker saying anything. It's how she did it. She's obviously closer to her own coworker than this guy, so it's someone she knows up close even if it's not personal. She have no idea whats going on at all, onky knows bits and peices. I wouldn't say what she did was out of jealously but it wasn't clear minded. Not only did she pull this guy aside without asking for further information from MC or atleast looking furthure into the situation(or atleast attempting it) when he told her he's the one she should be concerned about she didn't seem to relay that to Mc or even seemed concerned it comes off as 'their both shitty people'. But I get not wanting to be confrontational but how she did it was sketchy and backhanded.
I know the coworker is portrayal as a villain and she's just doing this because she's jealous and the circumstances are different for mc but imo it's honestly the right thing to do if you believe your coworker is cheating on their spouse.
My cousin recently found out that her boyfriend cheated a few years ago and a two friends in their friend group knew but nobody told her. She dumped him now, she was even thinking of marrying this dude. I get terrified when I think about wasting years on relationships like this without knowing.