Teen invites his terminally-ill sister to high school formal

[A princess for an evening/YouTube]

When it came to the high school winter formal, a South Dakota teen only had one girl on his mind to ask as his date: his 10-year-old sister.

AJ Spader invited his terminally ill younger sister, Rebekah to his high school’s formal as way to make memories, knowing that she “might not get to go to her own,” ABC News reports.

“I want to spend as much time with her as possible while she’s still doing good,“ AJ told ABC affiliate KSFY.

At the age of six, Rebekah was diagnosed with myelodysplastic syndrome, a potential terminal form of bone marrow cancer, reports FOX News.

After a bone marrow transplant failed, the family decided to stop all treatments to let Rebekah enjoy the time that she has left.

On the day of the formal, Rebekah got dressed up, wearing a formal dress and tiara. She also posed for pictures alongside her brother and accompanied him to dinner.

“It’s fun to watch her live part of [her] life where the disease doesn’t creep in. Where she is just excited to be going and doing something that every child or teenager gets to do,” Rebekah’s father told KSFY.

Unfortunately, Rebekah didn’t end up actually going to the formal dance because she got a little too nervous, ABC News reports. But it was still a special night for both siblings.