The GOOP founder, 48, gave the couple her blessing after seeing a photo of them making their red carpet re-debut at the Venice Film Festival this week.
“Okay, this is cute,” Paltrow commented on a pic of Affleck, 49, and Lopez, 52, kissing.
The comment was captured by @commentsbycelebs who called the social media moment “straight serotonin.”
It was the first time Affleck and Lopez had walked a red carpet together since the 2003 premiere for “Daredevil.”
Paltrow and Affleck’s on-again/off-again romance lasted from 1999 to 2000. They co-starred in two films together during that time — 1998’s “Shakespeare in Love” and 2000’s “Bounce.”
Their relationship ended because “he wasn’t in a good place in his life to have a girlfriend,” the Academy Award winner told “The Howard Stern Show” during a 2015 interview.
Paltrow claimed the two have remained friends since their split, adding that the Boston representer is “super intelligent and really, really talented.”
Affleck went on to connect with Lopez in 2002 — two years after breaking things off for good with Paltrow.
The “Iron Man” actress isn’t the only celeb chiming in on Bennifer 2.0.
Kim Kardashian also gave the couple high praise on social media by posting a pic of them posing together at the festival on her Instagram story.
“Long Live Bennifer,” she wrote over the photo, adding a red heart emoji.
Gwyneth Paltrow shows support for ex-Ben Affleck and Jennifer Lopez’s new romance