Well, the actor does not seem to have a girlfriend right now, so he is probably single.
Zackary is a renowned personality on social media, so if he had a relationship with anyone, he would have posted about it already.
Also, he is just 15 now, so it is not surprising that he does not have a girlfriend. Also, he is just 15, so he might not be ready to share anything about his girlfriend in public.
Any of these cases can be possible because there is no proof of either of these, so stick with us to find out more about his relationships.
Some people are suspecting that he and his co-star Alyvia Alyn Lind might be dating, considering the post by Zackary, but there is no confirmation of it yet.