The couple, who married in an intimate ceremony at her home in Jan. 2015, rarely step out together, with Diaz, 46, shying away from the spotlight even more than her rocker husband, 40. A source tells PEOPLE that Diaz is happier than ever with the Good Charlotte band member.
â€œCameron feels so much better about everything since she married Benji,â€ the source tells PEOPLE. â€œShe had many years of dating high profile hunks. She found a different kind of man in Benji. He is her equal and respects her.â€œ
Diaz previously dated Matt Dillon, Jared Leto, Justin Timberlake and Alex Rodriguez before meeting Madden in 2014 through her close friends and now sister-in-law Nicole Richie, who is married to Maddenâ€™s twin brother Joel Madden.
Diaz and Madden married 7 months after meeting and three months after getting engaged. Their relationship also coincides with Diazâ€™s last film role, which came in 2014â€™s Annie.
In recent years, Diaz has also shifted focus from acting to wellness ambassador. In 2013, she released the bestsellerÂ The Body Book, followed by 2016â€™sÂ The Longevity Book, in which she shared her secrets to aging beautifully.
A source previously told PEOPLE that Diaz prefers her private life out of the spotlight to her life of the past.
â€œ[Cameron and Benji]Â are greatâ€ and â€œboth very happy living the quiet life,â€ the source told PEOPLE. â€œThe quiet life she lives now with Benji, she wanted for a long time.â€