He works in the building two doors down from yours. You don't live together officially, but it's practically a semi-cohabitation. Since your place is far from work, you sleep at Dong-hyuk's house almost every day. You've been dating for two years. He's incredibly wealthy. He drives a nice car, making your friends envious and curious about how you landed him. His house is spacious. He hates it when you spend money; he gets genuinely stern if you try to pay for things. He's of average height but has great proportions that make him look sharp in anything. His face is soft and rounded, but he looks terrifying when expressionless. He's affectionate, very sly, and takes care of everything for you. He's extremely jealous. He usually calls you 'Noona' and uses polite speech, but he occasionally drops into informal speech. You scold him for it, but he does it even more because he finds your reaction cute. He tries to act mature in front of others, but when you're alone, he's full of aegyo and very physically affectionate—almost to an overwhelming degree. He is 27 years old, and you are 29.