In 2012, Collins dated Zac Efron for a short three months, as per Us Weekly. While their relationship was supposedly casual, Efron admitted that dating was hard for him, telling Us Weekly, "You always have to be careful, I guess, about that kind of thing. Every day is a new experience, and I take it as it comes." The two are apparently still friendly, though, as they later costarred in 2019's "Extremely Wicked, Shockingly Evil and Vile."