Bridge from a Frenchman (average level, if there's something you don't understand just tell me and I'll ask a native speaker! )
"Sister you must know I do think of you since a very long time I miss you my darling, my life, my heart doesn't stop telling me it* doesn't want to lose you it's looking for you all the time it* says that "you without me" doesn't exist, actually my sister I love you with all my soul, with all my heart, you are the half of my life... I LOVE YOU"