Aaron is introduced in Pret-a-Poor-J as an upcoming artist about to be featured in Rufus Humphrey's art gallery.
While setting up his display at the gallery, he meets Serena van der Woodsen, who is there to see Dan Humphrey.
He currently plays with an independent band, Ceesau.
Afterwards, he asks her to go celebrate the success with him but she turns him down after telling him she isn't dating at the moment.
He tells her that if she can figure out the meaning behind Cecil the Caterpillar, he'll go out with her.
On House, he played the teenage poison victim Matt Davis in Poison.
He has been an actor in movies, televisions and commercials since he was 11 years old, but still managed to graduate high school by the age of 15.
However, Aaron ends up leaving the opening with another girl on his scooter.