[2] The second of three children born to Mindy, a nurse, and Neil, a pediatrician, he has two sisters, Madeline and Molly, both of whom have competed in pair skating.

He spent four months in a body cast and another four in physical therapy, and was required to stay off the ice for a year.

[16][17] His West Side Story free skate helped him score a total of 255 points to win the gold, ahead of silver medalist Ross Miner and three-time winner Jeremy Abbott.

[18] Aaron won gold at his first ISU Challenger Series (CS) event, the 2014 U.S. International Classic.

Turning to the Grand Prix series, he won the bronze medal at the 2014 Skate Canada International and placed 7th at the 2014 Rostelecom Cup.

Aaron began his season with silver at the 2015 Nebelhorn Trophy followed by gold at a Grand Prix event, the 2015 Skate America.

[19] At the 2015 Trophée Éric Bompard, he placed 7th in the short program, which became the final result after the event was cancelled due to the November 2015 Paris attacks.

At the 2016 World Championships in Boston, he ranked 8th in the short program and went on to set a new record for a United States male skater in the free skate, earning a total of 254.14 points, although this was broken a few minutes later by his teammate Adam Rippon.

[20] Aaron decided to modify his approach to quad jumps, stating in August 2016: "I'm using an inside three turn (entrance).

"[21] Aaron began his season with a pair of bronze medals, earned at the 2016 Autumn Classic International and 2016 Lombardia Trophy.

Aaron won silver at the 2017 U.S. International Classic and bronze at a Grand Prix event, the 2017 Cup of China.