Zev and Justin's friendship started six years ago when they were working as camp counselors and the two have been very close ever since. Zev has Asperger's Syndrome, but they do not let it affect their relationship. They share friends and interests, and the friendship is as mutually beneficial as any could be.
Outside of the occasional trip to Vegas (where Justin took Zev to lose his virginity), neither has traveled extensively, particularly with one another. Their relationship is spontaneous and unedited and resembles one of brothers more than friends.
Together, the two competed on Season 15 of The Amazing Race, where they placed ninth. They then came back to compete in Season 18 of the show, "Unfinished Business."