Earlier today, Changmin posted on his Lysn fanpage a letter announcing his engagement! It reads: Hello. This is TVXQ’s Changmin. There is something I want to tell fans myself, so I am taking the courage to write this letter. It is not something I can say easily, so I am very nervous right now as I write each word. On one hand, my heart feels heavy and apologetic thinking that my sudden news will shock and maybe upset some fans who always support me with great affection. Howev