What is the relationship between John Wick and his former ally, Aurelio?

John Wick and Aurelio have a complicated relationship that is explored in the John Wick movie franchise. Aurelio is a former ally of John Wick, who provides him with cars and other services. However, their relationship becomes tense when John's car is stolen and taken to Aurelio's chop shop, where he recognizes the car and confronts Aurelio.

Despite their past relationship, Aurelio refuses to help John with his mission of revenge, leading to a physical altercation between the two. Later in the franchise, the two seem to have put their differences aside and have a professional relationship once again.