Jeremy Renner, 54, quietly dated influencer CC Mason, 26, while recovering from snowplow accident

Jeremy Renner had a romance with a much younger influencer last year, Page Six can exclusively reveal.

Multiple sources tell us the “Avengers: Endgame” star, 54, dated fashion influencer Cassandra “CC” Mason, who is 28 years his junior, for about eight months “off and on” throughout 2024.

We’re told the pair developed a strong connection in part because both had been through serious health struggles.

Renner, for his part, had a near-death experience when a snowplow ran over him in January 2023, and Mason, 26, overcame thyroid cancer at a young age.

Jeremy Renner dated influencer CC Mason “off and on” throughout 2024, sources tell Page Six.

In 2019, she posted via Instagram, “4 YEARS CANCER FREE!!! Not many people know that 4 years ago I was diagnosed with 2 types of thyroid cancer.

“Today, I received my 4 years ALL CLEAR! Today is a day to be thankful for everything! Life is too short! Take advantage of EVERY day! Today is a day to CELEBRATE! I love you guys!”

A source tells Page Six that Renner and Mason did not just bond over their respective experiences but more so had a “mutual understanding” for what they had each been through.

A second source

tells us that the couple would often spend time together in Los Angeles and London, while the actor filmed “Knives Out 3.”

We’re told Renner’s “bad boy reputation” was a point of concern for Mason at first, but she decided to give him a chance and found him to be “sweet.” She also thought he was an “inspiring person,” per an insider.

A source says the former couple are no longer together but remain good friends. A reason for the split was not provided.

Page Six has reached out to Renner’s rep and Mason for comment but did not immediately hear back.