You can use any title you would like to. For example - you can use one of the sayings for Sister and use it for Aunt. Words can be changed. Also the words can be either singular or plural (example - "we love you" or "I love you").

Mom and Dad:
(Your so special) You have always been by my side. Never let me feel alone. I know you’ve tried to keep me from the hurts in this world by teaching me right from wrong. For all the lessons I’ve learned in life, it’s from you that I have learned. It’s your voice that turns me in the direction I should go, along with your prayers. You always have the right words to say and the right time to say it. Never wanting anything for yourself, but always seeming to have it all, of what really counts in life. I just want you to know that I am so thankful and honored that you are my Parents. You are so special to me. Thank you mom and dad I love you! ( ITEM #S3 )