Idina met her first husband, actor Taye Diggs, when they were both performing as original cast members in RENT in 1995. The duo eventually started dating and tied the knot in 2003. Idina and Taye reprised their Broadway roles in the 2005 film RENT alongside fellow original cast members Adam Pascal, Anthony Rapp, Jesse L. Martin, and Wilson Jermaine Heredia.

Sadly, despite a decade of marital bliss, news broke in 2013 that Taye and Idina had filed for divorce. In a joint statement to People, the former couple wrote, "Idina Menzel and Taye Diggs have jointly decided to separate at this time. Their primary focus and concern is for their son. We ask that you respect their privacy during this time."

Following her divorce, Idina began dating fellow actor Aaron Lohr in 2015. Ironically, Aaron also appeared in a brief role in the 2005 film adaptation of RENT, where the two first met. Although it is unclear how they reconnected, Aaron and Idina made their first public appearance as a couple at the April 2015 White House Correspondent's Association dinner, per Yahoo! Entertainment.

By August, The Los Angeles Times reported they had purchased a home worth an estimated $2.675 million, and by 2016, Idina announced she was engaged on Twitter. Idina and Aaron officially married in September 2017 and have been together ever since! Yahoo! Entertainment says Aaron has since retired from acting and currently serves as the clinical director at Avalon Malibu, a mental health and addiction rehab center.