Justin was born ten-minutes north of Boston, MA. He is one of six kids. He has two older brothers and three younger sisters. He graduated from the Theatre program at the Walnut Hill School for the Arts, a Performing Arts High School in Natick, Massachusetts. He then went onto receive his BFA in Theatre from the Tisch School of the Arts at New York University. Soon after graduating NYU, he booked a Recurring role on an ABC Family Pilot called "Chasing Life." The pilot was shot in Boston. Justin moved to Los Angeles to continue to pursue acting.