The"National Lampoon's Vacation" star, 71, and Pacino, 83, were an item from 1997 to 2003 -- welcoming twins Anton and Olivia, 22, in January 2001 before what she now calls a"complicated" split.
Taking to Instagram on Monday, she explained that when she asked her followers what they wanted to see on her page going forward, many wanted to know more about her relationship with Pacino. She shared that before opening up about their past, she did get approval from the pair's twins before posting anything."My story with Al began 27 years ago, two artists meeting, falling in love.
"We've always been linked on the creative level - our conversations about acting, the search/need for expression - that's a conversation that started in 96 and continues to this day," she added."It's def a unique relationship, encompassing a wide breadth / depth of experiences and emotions, through thick and thin, a true friendship."
While she said Instagram wasn't the place to really get into the"infinite layers" of their -- or any -- intimate relationship, she hoped the accompanying video enlightened her fans on some of their queries. "I lived with Al for 7 years and we have two children. In 1996, we were on the same plane going from Los Angeles to New York. He was seated in front of me, he said come up and sit beside me and by the time the plane landed, it was on," she added in the video itself.