Jennifer Lopez and Alex Rodriguez's look-alike kids enjoy Sunday fun day in the pool

Sundays are for family time!

Jennifer Lopez and Alex Rodriguez enjoyed a "Sunday fun day" this weekend with their children -- and it looked like everyone had a blast during the pool day.

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Lopez took to Instagram to share a picture from the day that featured her boyfriend, her 9-year-old twins Max and Emme, and Rodriguez's daughters Natasha, 12, and Ella, 9.

Happy Sunday everybody!! #sundayfunday 💙💙💙💙💙💙📷@lacarba

A post shared by Jennifer Lopez (@jlo) on

"Happy Sunday everybody!" she captioned the adorable photo. "#sundayfunday"

Rodriguez and Lopez have only been dating a couple of months (their talked-about romance reportedly began in February), but that hasn't stopped either star from going all-in on the relationship. After several weeks of traveling together, the couple began making highly-publicized outings together in New York and Los Angeles before making their red carpet debut together at the 2017 Met Gala in early May.

See more photos of Alex Rodriguez and Jennifer Lopez together:

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Jennifer Lopez and Alex Rodriguez together
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Jennifer Lopez and Alex Rodriguez together
NEW YORK, NY - MAY 08: Alex Rodriguez and Jennifer Lopez leave Carbone on May 8, 2017 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - MAY 01: Jennifer lopez Alex Rodriguez seen out in Manhattan on May 1, 2017 in New York City. (Photo by Robert Kamau/GC Images)
NEW YORK, NY - MAY 01: Professional baseball player Alex Rodriguez (L) and actress Jennifer Lopez leave the Rei Kawakubo/Comme des Garcons: Art Of The In-Between' Costume Institute Gala at the Metropolitan Museum of Art on May 01, 2017 in New York City. (Photo by Ray Tamarra/GC Images)
NEW YORK, NY - MAY 01: Jennifer Lopez and Alex Rodriguez attend the 'Rei Kawakubo/Comme des Garcons: Art Of The In-Between' Costume Institute Gala at the Metropolitan Museum of Art on May 1, 2017 in New York City. (Photo by Karwai Tang/WireImage)
NEW YORK, NY - MAY 01: Jennifer Lopez and Alex Rodriguez attend the 'Rei Kawakubo/Comme des Garcons: Art Of The In-Between' Costume Institute Gala at Metropolitan Museum of Art on May 1, 2017 in New York City. (Photo by Dia Dipasupil/Getty Images For Entertainment Weekly)
NEW YORK - APRIL 24: Jennifer Lopez and new boyfriend Alex Rodriguez seen leaving 'The Sea Grill' at Rockefeller after lunch together on April 24, 2017 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK, NY - APRIL 24: Alex Rodriguez and Jennifer Lopez are seen in Midtown on April 24, 2017 in New York City. (Photo by Gotham/GC Images)
NEW YORK, NY - APRIL 24: Alex Rodriguez and Jennifer Lopez are seen in Midtown on April 24, 2017 in New York City. (Photo by Gotham/GC Images)
MIAMI, FL - APRIL 18: (EXCLUSIVE COVERAGE) Alex Rodriguez and Jennifer Lopez leaving Prime 112 Steakhouse aftre dinner on April 18, 2017 in Miami, Florida. (Photo by Gustavo Caballero/GC Images)
NEW YORK, NY - APRIL 03: Alex Rodriguez and Jennifer Lopez leave the Solow Building on April 3, 2017 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - MARCH 31: Alex Rodriguez and Jennifer Lopez leave Marea restaurant on March 31, 2017 in New York City. (Photo by James Devaney/GC Images)
Actress Jennifer Lopez shakes hans with Alex Rodriguez before a subway series game between the New York Mets and the New York Yankees at Shea Stadium in Queens, New York on Saturday May 21, 2005. The Mets beat the Yankees 7-1. (Photo by Mike Ehrmann/WireImage)
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This isn't the first time their kids have hung out together, either. Rodriguez and Lopez brought their children along for their Easter weekend in the Dominican Republic, where the cute kids reportedly hit it off.

Lopez shared a photo of her daughter, Emme, and Rodriguez's daughter, Natasha, hanging out on the picturesque trip.

Tashi and lulu...🌺🌸 💕

A post shared by Jennifer Lopez (@jlo) on

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