Now that BoA is gone in his life, Eunhyuk finds out then that she was the one for him.Sadly BoA already moved on from their cold relationship and is now happily engaged with Donghae. Knowing that Eunhyuk and Donghae are best friends, Eunhyuk tries to talk to Donghae about giving his realtionship with BoA another chance. Inspired by Bruno Mars' latest song "When I was your man", a story about love and regret, friendship and betrayal. Only now do I realize that I was the one for you and you are the one for me.