What Is a Red Flag?

i'm an indian, and in our culture, we have a lot of arranged marriage. And i started asking people about oca. So, like, how does this, yall been married for 30 years? How does that worrk? Like, you know, what was the arranged marriage like? And then i thaught they shared with me something that as really, really interesting, which is that when they had an arranged marriage, happiness was not guaranteed, right?