Never have a relationship with a korean. It'll be a very difficult relationship where you may either loose a friend, or break ties with any of your siblings of the same sex.
If you ever do decide to have a relationship with a korean, you must be aware that there is a possibility of a former loved one, a boss, or the above mentioned people waiting in the wings to cheer her up and give her second thoughts whenever you encounter a rough spot in your relationship.
If this facts trouble you, if ever they are too much to bear, don't worry. chances are that there will be a girl who will suddenly appear in your life to comfort you in those moments of trouble and confusion.
These are all based on reliable sources people. Just watch all those Korean Telenovellas, you'll see what I mean.