He died just before her 17th birthday and that's when she got the first gift of flowers and her first letter.
According to Bailey Sellers, her father, Michael, passed away when she was 16.
Bailey Sellers' 21st birthday was more than special for her as she received a final bouquet of flowers and a card to her Tennessee home from her father who died from cancer when she was 16.
On Friday the East Tennessee State University student received her final bouquet and card.
"I am in a better place".
"I will still be with you through every milestone", Michael wrote.
Along with the image of the flowers and Michael's letter, Sellers added a lovely photo of her as a child, sitting on her dad's shoulder at the beach - both them smiling from ear to ear - with the caption, "Miss you so much daddy". It is your 21st birthday and I want you to always respect your momma and yourself. The emotional card reads, "Be happy and live life to the fullest".
"I broke down", she said. He was given two weeks to live and survived for six months until he passed, leaving Sellers, her mom and her three older siblings.
In the card that came with this year's flowers, Mike Sellers told his daughter this would be his last letter to her "until we meet again" and that she shouldn't shed anymore tears over him.
Social media users responded to Sellers' post, calling it both "heartwarming", and "heartbreaking".
Bailey said the fact that the letter went viral - it has over 331,000 retweets and 3.2 million likes as of publishing - would really touch her dad. Sellers understands that pain; she said she became depressed after her father's death. The Mirror in the United Kingdom picked up the story and her tweet generated many responses. "He would honestly say it was God, he'd be very proud that it touched a lot of people".