Ramos says he gets along with Pique whenever they're together with the Spain squad.
He stated: "The relationship with Piqué? It's like the other day a few compatriots of Athletic, once the match ended we shook hands.
"It is the rivalry between Real Madrid and FC Barcelona, and that will not change. We are used to throwing ourselves a few stones, but we do it without malice and in a healthy way ... and that sells you (to reporters).
"The key remains the unity of the team, and that, one cannot lose it."