Riley, as well as mother Lisa Marie Presley, are shaken over the devastating loss.

“Mornings are the hardest. I forget you’re gone,” she began the lengthy dedication. “I can’t cry because of the fear that I will never stop. A pain that’s new to me.

“You. There are no words for you. Angel is the closest I could think of,” she continued. “Pure light. Baby brother. Best friend. Wild man. Intellectual. Witness to my life. Twin soul. Protector. Too sensitive for this harsh world. I hope you give me strength to endure the giant hole you’ve left in my heart. I hope you give me the strength to eat. I hope you’re cradled in love. I hope you feel my love. I hope you feel god. You are god. I can’t believe you’ve left me. Not you sweet Ben Ben. Anyone but you. I guess this is true heartbreak. I hope we meet again.”

The thoughtful note was accompanied by eight photos of the siblings spending time together.

The death of her son left Lisa Marie “entirely heartbroken, inconsolable and beyond devastated,” her manager, Roger Widynowski, said in a statement. “She adored that boy. He was the love of her life.”