Vincent VonTobel has raised Sarah Leonard since she was two-years-old and has treated her like his own daughter.
"He has been fantastic to her - he never treated her as a stepchild," Sarah's mom, Jessica VonTobel, told InsideEdition.com. "Then he proposed to me. He said he loved us so much and he wanted to marry me and take care of us forever."
After marrying Sarah's mother, Vince became her stepdad, but never adopted her. Fifteen years later, 17-year-old Sarah planned to change that with the contents of a decorated box.
Then Vince saw the paper that would change their lives - adoption papers to officially become Sarah's father after all these years.
With a slight chuckle, Vince's eyes brimmed with tears and he uncontrollably sobbed with joy.
"He is honestly pretty strong both physically and emotionally. I didn't realize until he broke how significant and important it was to him," Jessica said. "It was like everything in our family was complete."
Getting up from her seat next to him, Sarah rose to comfort her soon-to-be father.
"I love you so much and there is nobody else that I would want to be my dad except for you," Sarah said in the video.
Kristina Tieken is a staff writer for FamilyShare, public relations specialist with a love for the fine arts, food and exercise. She enjoys watching movies and spending time with her husband and family.