Responses
Some countries treat step-relatives as blood relatives, meaning step-sisters and step-brothers can never marry each other and stuff like that. Maybe that's the reason why.
I dont think same sex marriages are legal in South Korea yet? I guess it's how other people perceive your family if they found out but I'd say fuck it who cares -.-
I don't see why either of them would have to brake up with each other they are not blood related and it's not like they grew up in the house together