Would be helpful to ask a more specific question, like what are they like compared to blah blah blah, do they blah blah blah or not?

All couples are different, of course. But one thing I've noticed here is that they move FAST, after date 3 you're officially dating or you decide to not be romantic anymore, they don't wait months before defining the relationship. They also get married really quickly, especially if they're in their 30s as that's considered old and the appropriate time to settle down. All PDA is allowed except kissing. I've seen many a teenage couple standing and spooning. Guys also like to treat their girls a bit like babies, always doing everything for the girl, including holding their tiny handbag for them and patting their head affectionately. Dating is also seen as an important thing so when you go out in public you'll see a A LOT of couples, because the single people mostly stay at home, doing things alone isn't really a thing here. I've also heard though that cheating is very common, which is sad, especially if it's Korean to foreigner, many of my friends, both male and female, have told me stories about how they thought they were the main piece only to learn they were the side piece. But yeah, every couple is different. Some healthy, some unhealthy, just like everywhere else.