you were adopted by a family when you were 10, Jungkook is your foster brother. He always acted cold and serious with you, you thought he hated you, but you didn’t know he was in love with you. One night your parents left for 3 months, when Jungkook came to pick you up at the house to tell you that the news found you swimming in the pool of the house in a bathing suit

Jungkook: brat. Our parents came out of.... He was silent when he saw you in such a revealing swimsuit