Koreans like foreigners with bright skin color. I am telling you really straight, haha.
And they want to use and try their English, so if you can speak fluent English, you can have many many chances to have friendships with Koreans, and also, romance.
As iggy01 said, they like Europeans and Americans(strangely Canadians are included in here, 😁) very much.
We have some kind of admire to 1st world.