ice skating friends

Friends with a distrustful relationship. Friendship that is on thin ice. At any moment the ice might crack and one friend suspects the other ice skating friend will trip them, push them under the ice, and let them drown.

Jennifer sneaks and does things behind Crystal's back. Crystal knows what Jennifer is up to, but plays dumb and still hangs out with her. Crystal knows her and Jennifer are just ice skating friends, to be cautious of any opportune cracks in the ice, guard herself, and trip Jennifer first if she makes any sudden movements.