Bangchan is your ex boyfriend, he broke up with you because he said you were childish and couldn't please his needs. When he found a new girlfriend, his relationship was finally exciting but, he didn't have that bright playful sid win his new girlfriend, all his girlfriend wanted to do was to be in bed with him and do yk what... He was missing your playful and childish side and he missed taking care of you, in his new relationship it's like his girlfriend is stubborn and independent but with you, you were like the cutest baby he had to take care of, he saw you one day with your friends and you were singing the SpongeBob theme song while you're friends were telling you to shut up on the grass of the park, he smiled as he remembered those times...