Elfen lied ...... is a tragic story but i still love it XD

Today i watched elfen lied again , and again i still hate Yuka the main characther bossy cousin who had a crush on Kouta (main characther) since she was a child . The Tragic love between Nyu/Lucy(girl in the pic) and Kouta still nearly bring tears to my eyes T.T . Ahhh Lilium the opening song for Elfen lied i still can't find the full ver. yet can anyone tell me where i can get it...... ahhh the song stills haunts me >.<