• Jennifer Lopez shared a series of bikini photos Saturday to mark her 52nd birthday
  • One photo showed Lopez passionately kissing Ben Affleck
  • Fans and followers flooded her with birthday greetings and congratulatory messages over their rekindled romance

Jennifer Lopez just made her romance with Ben Affleck Instagram official on her 52nd birthday.

Lopez and Affleck have been inseparable since reconnecting earlier this year, but they had yet to publicly address their relationship or post about each other on social media — until now.

On Saturday, the "On The Floor" singer turned 52 years old and marked the occasion by sharing on Instagram and Twitter a series of photos featuring her posing in a yellow and pink bikini. The last picture featured Lopez and Affleck sharing a passionate kiss.

"5 2 … what it do," Lopez wrote in the caption of the photos, which have received over 5 million likes as of writing.

Lopez's fans and followers flooded her post with birthday greetings and praise over her bikini body. They also gushed over her rekindled romance with Affleck, whom she was previously engaged to between 2002 and 2004.

"THE LAST ONE THO! HBD QUEEN!" Ashley Graham commented.

"I mean, if you’re going to Instagram official do it like @jlo," Elaine Goldsmith Thomas wrote.

"Danmmmmmmmm legit made my jaw drop," Chris Appleton commented.

"Yes the ultimate!!!!! Every Birthday you are not only more stunning but you are ever more effervescent!!!! you break the records year after year while being the kindest most talented beautiful soul! That is pretty damn remarkable! Love you!!! The last slide is [fire emoji] Have the best day!!!!" Tracey Anderson added.

"I want to look like this when I’m your age boo!" @ponyy_boyy added.

"You look super happy!" Hoda Kotb wrote.

Earlier this week, Lopez told Kotb on the "Today" show that she planned to keep it simple and low-key for her birthday this year.

"They keep coming, these birthdays," the singer-actress joked. "[I'll be celebrating] with friends, having fun, you know, raise a glass, give a toast."

However, Lopez dodged questions about her reignited romance with Affleck, only saying, "I am happy!"

In an interview earlier this month, Lopez also said that she's in the "best time of my life" and assured her fans that she's happy.

"I'm super happy. I know people are always wondering, 'How are you? What's going on? Are you OK?' This is it. I've never been better," Lopez told Zane Low on Apple Music 1. "And I just want everybody to know that it's the best time. It's the best time of my life."

Last month, an unnamed source told E! News that Lopez was moving from Miami, Florida, to Los Angeles, California, because she wanted a "fresh start" with the "Justice League" actor.

Then, last week, the two were spotted looking at houses together. One of the homes they visited was a $65 million mansion that was part of L.A.'s "Billionaires' Row" in Holmby Hills.

Jennifer Lopez and Ben Affleck.
Jennifer Lopez and Ben Affleck had, reportedly, planned to go Instagram-official. James Devaney/WireImage