The two celebs, who often documented milestones in their relationship on social media, took to Instagram on Saturday night to share the news.
The pop star and three-time American League MVP have been dating for around two years and recently attended the 91st Academy Awards together in late February.More news: Kelly Released From Jail After Someone Paid His Owed Child Support
Both JLo and A-Rod posted photos of the former baseball player holding her hand, adorned with a massive diamond ring. "We understand each other's lives in a way that most other people couldn't". Lopez told ET's Kevin Frazier they had "an incredible day together" celebrating their anniversary.
Lopez told James Corden in 2018 that they met when she "just tapped him on the shoulder and said "hi" and that was it".More news: US Nationals Will Need Visa to Enter EU States Starting 2021
Lopez responded to Rodriguez's words a few months later, telling the outlet: "I'm glad that he sees me that way, that I would be a good role model to his girls".
It will be the fourth marriage for Lopez, who divorced singer Marc Anthony in 2014, and the second for Rodriguez, who has been divorced since 2008.More news: Millions left without electricity in Venezuela
Lopez was also previously married to Cris Judd from 2001 to 2003 and Ojani Noa from 1997 to 1999.