Mary Kay Letourneau Fualaau's Now Teenage Daughters: Exclusive First Look

— -- Mary Kay Letourneau Fualaau and Vili Fualaau are infamous for having one of the most scrutinized forbidden relationships in recent memory.

Mary was Vili’s sixth-grade teacher in 1996. By the end of the school year, Mary said the two had bonded. She was 34 and married with four kids. He was just 12.

They started having an affair and were forced to go public after Mary became pregnant with the couple's first child. She pleaded guilty to two counts of second-degree child rape and went to prison, where she gave birth to a second daughter behind bars.

Today, Mary, now 53, and Vili, 31, are still together, married, and are about to celebrate their 10th wedding anniversary.

Their two daughters, shown here during the family’s exclusive interview with Barbara Walters, are now teenagers -- older than Vili was when the affair started.

“Probably why I looked so forward to getting married is because I already knew what kind of father he was ... just knowing his personality and how invested he was in being a father,” Mary said.

This interview is a part of Barbara Walters' upcoming new series, "American Scandal," on Investigation Discovery, which revisits some of her most famous interviews.

Audrey, who is 17 years old, graduates from high school this coming June and is set to attend community college in the fall. Georgia, who is 16, is a sophomore and a cheerleader. Both girls sing in their high school choir.

The two teens, who are in the same school district Mary used to teach in, said their parents have told them how they met, and they knew their mother was different from others when their interaction was limited to prison visits. But the girls seem unfazed by the controversial circumstances of how their family was formed.

“There was never a sit-down chat, ‘Now is the time we're going to talk to our children about this,” Mary said. “They seemed to already know ... because they grew up with it. ... There's just never been a ‘Wow, we better explain.’”