Actor Kim Kap Soo of MBC�s �All My Love� released a spoiler for the �Happy Together� line-up through his own Twitter!On March 19th, he wrote, �I�m going to film �Happy Together.� Line-up includes IU, Eunjung, Yangpa, and Kim Mi Ryeo. I didn�t think I�d be able to appear on the show with such pretty friends. It feels like a good Saturday, even the weather feels warm. Feels nice!� Netizens replied,