지금 니 여친 어떤애랑 싸운다 -> 지금 네 여친(이) 어떤 애랑 싸운다. (네 여친 = 네 여자친구 = your girlfriend; 어떤 애 = someone - '애'(아이), originally "kid", also means "a (young) person") The meaning is as manybuddies says: Your girlfriend is quarreling with somebody now.

I'm guessing, "Your girlfriend is quarreling with somebody now."