그 사람이랑

with that person

→ 그
phrase Rare #26,950
with that person 랑 marks the person someone is with or doing something with; it is a conversational form of 'with.'
KO: 그 사람이랑 영화를 봤어요.
EN: I watched a movie with that person.

그 사람 이랑 잤어?

Did you sleep with that person?

— 퍼펙트 스트레인저 (2016)