Good Charlotte guitarist Benji Madden is reportedly dating The Other Woman star Cameron Diaz. A source revealed to US Weekly that the dalliance between Madden, 35, and Diaz, 41, is “very new,” and that the two are “just hanging out.”

The source added that Madden’s sister-in-law Nicole Richie might have played matchmaker. Richie, who is close friends with Diaz and married to Madden’s twin brother Joel “thought they’d click,” according to the source. The two have only been seeing each other for the past few weeks.

Diaz, who recently caused a stir after saying that humans are not “naturally monogamous” and have “the same instincts as animals,” hasn’t been publicly linked to anyone since her split from New York Yankees third baseman Alex Rodriguez back in September of 2011.

Madden had previously dated Australian ingenue Sophie Monk, international entertainment icon Paris Hilton and reality television personality Holly Madison. The musician founded Good Charlotte in Waldorf, Maryland in 1996, and achieved mainstream success with the release of the record The Young and the Hopeless in 2002, which sold 4.9 million copies.

Here is Good Charlotte’s Dance Floor Anthem of 2007:

Regarding Diaz’ comments regarding humanity being instinctively unable to maintain monogamous relationships, the actress explained that she was merely channeling the viewpoint of Carly Whitten, the character she’d played in her latest film, The Other Woman.

“That’s not what I said. My character says she doesn’t believe in monogamy … ! I believe in monogamy. That is an important part of a successful relationship,” Diaz said, adding, “I have had (monogamous relationships). And, by the way, also, not all relationships end because people get cheated on, or people cheat. Relationships end because they end for whatever reason, but they are still successful relationships that have been monogamous for, however, long they’ve lasted.”

Here is the trailer for The Other Woman, which has raked in $65 million on a $40 million budget so far at the box office:

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