In an interview, Renner said that he and Adams are "very close" and that they "love each other." He also said that he was "happy to support" Adams in her role in Arrival.
Adams has also spoken highly of Renner. In an interview, she said that he is "a great guy" and that she is "lucky to have him as a friend." She also said that he is "a very talented actor" and that she "loves working with him."
It is clear that Renner and Adams have a strong friendship. They are supportive of each other both personally and professionally. It is likely that they will continue to work together in the future.