The two guys were seen shooting an action sequence at night, while Robbie tried to keep his hands warm.
“‘Did we just become best friends!?’ Such a good time filming with this dude. @robbieamell is the man. Much excitement to come once we return from hiatus!” Grant joked on Instagram with one of the pics.
If they did — well, best best friends ever!
15+ pics inside of Robbie Amell and Grant Gustin…