There is pain in this song. He is offering his heart unconditionally. It is up to her to accept it or break it. He is not rushing her, just staying back waiting for her decision. He is giving her space. He says he is willing to wait and will not try to change her mind, but he is obviously waiting for her to come back to him. I am not sure about the reference to a manger. He is going to keep his eyes open and guard his heart next time he falls in love.