'Heechul hyung.... how does it feel like when u fall in love?' Ryeowook asked Heechul, whom is still grinning to himself after a phone conversation with Ae Li, his wife to be....  'Haeng bok.... (happiness)' was Heechul short answer. 'How do u know its her??' asked Ryeowook again, with a puzzled look. 'Yah, Ryeogaa.... u will know when u meet the one....'this' will tell u so....' Heechul smiled at the innocent maknae, pointing at his left chest.