Jennifer Lopez Shares a Romantic Kiss with Ben Affleck While Celebrating Her 52nd Birthday

Jennifer Lopez celebrated her 52nd birthday aboard a boat with Ben Affleck on Saturday

Jennifer Lopez and Ben Affleck
Photo: Elder Ordonez/

Jennifer Lopez is celebrating her birthday with Ben Affleck!

The "Cambia El Paso" singer showed off a rather steamy kiss with the actor while celebrating her 52nd birthday aboard a boat on Saturday.

In the photos posted to Instagram, Lopez wore a red and yellow chevron, two-piece bathing suit, paired with a brightly-colored caftan, gold jewelry, and a sunhat. Meanwhile, Affleck, 48, opted for a casual button-up top on the water.

"5 2 … what it do …💗," she captioned the romantic images.

Saturday's birthday post marks the first time Lopez or Affleck have shared anything about their rekindled romance on their own social media accounts.

A Hollywood insider told PEOPLE in this week's issue that the pair "are madly in love" and "the loves of each other's lives."

For more on Jennifer Lopez and Ben Affleck's trip in St. Tropez and other top stories, listen to our daily podcast PEOPLE Every Day.

"They want to do everything they can to make this work," added a Lopez source

Lopez and Affleck, 48, originally began dating in July 2002 and got engaged that November before postponing their September 2003 wedding days before the date. They ultimately called off their engagement in January 2004.

They were first spotted spending time together again in April, following her split from Alex Rodriguez.

RELATED VIDEO: Jennifer Lopez and Ben Affleck Are 'Madly in Love' as They Plan for a Future Together: Source

Since then, the pair have regularly been spotted hanging out together and spending time with each other's children.

On Thursday, Leah Remini shared a video from her star-studded 51st birthday bash featuring dozens of photos from the party — including a snap of Affleck with his arms around Lopez and Remini.

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<a href="" data-inlink="true">jennifer lopez</a>, <a href="" data-inlink="true">ben affleck</a>, leah remini
Jennifer Lopez, Ben Affleck and Leah Remini. leah remini/instagram

A source previously told PEOPLE in June that "it's very obvious that Jennifer is serious about Ben."

"Everything seems to be running smoothly," the source added. "She hasn't looked this happy for a long time."

For more about Jennifer Lopez and Ben Affleck, pick up the latest issue of PEOPLE, on newsstands Friday.

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