The chemistry is elektric.

Jennifer Garner and her boyfriend, John Miller, shared another rare PDA moment while spending time at a charity event for kids in Santa Monica, Calif., on Sunday.

The couple was seen smiling and sweetly locking lips as the actress celebrated the conclusion of her fundraiser for Save the Children.

The “Last Thing He Told Me” star, 53, was dressed comfortably in a T-shirt, leggings and sneakers.

She also wore her hair in two French braids to run a mile to benefit the humanitarian organization.

Meanwhile, Miller — who came out to support her — looked casual in a green tee, jeans and boots.

Garner and Miller have not been shy about flaunting their romance lately.

Earlier this month, they were also seen sharing a steamy kiss outside of the businessman’s home in Los Angeles.

During the passionate embrace, the “Elektra” actress affectionately placed her hand in her beau’s back pocket and wrapped her arms around his midsection.

The duo has been dating on and off since 2018.

In March, an insider told Page Six that Garner is “happy” in her relationship with Miller — even though her ex-husband Ben Affleck would be “open” to trying again.

Despite sharing three children with the Oscar winner, the source told us that “feeling is not mutual” on Garner’s part.

“Jen has a great co-parenting relationship with Ben, and that’s where things stand on her end at the moment,” they added.