American schoolteacher Mary Kay Letourneau made headlines around the world for her secret affair with a 12-year-old student still insists today she had no idea what she did was a crime. Video: Sunday Night 
 
 Convicted pedophile says she didn’t know it was a crime 0:18 
 
 MARY Kay Letourneau was a 34-year-old teacher when she made headlines for having sex with one of her grade six students. 
 
 To this day the now 56-year-old insists she had no idea what she did was a crime. 
 
 Letourneau was a mother of four and still married to her first husband when she was convicted of the rape Vilo Fualaau. He was age 12 at the time — and just 13 when Letourneau had his first baby. 
 
 She pleaded guilty to two counts of felony second-degree rape of a child in 1997 and was sentenced to seven years in prison. 
 
 Despite all this, Letourneau said she “did not know” she was committing was a crime. 
 
 In an interview with Channel 7’s Sunday Night, the former Seattle primary school teacher was quick to defend her actions — a defence she’s held from the beginning of the affair. 
 
 “I’ve said this over and over again. Had I’d known, if anyone knows my personality. Just the idea, this would count as a crime,” she said. “If someone had told me, if anyone had told me, there is a specific law that says this is a crime.” 
 
 When journalist Matt Doran asked her if she believed she was wrongly imprisoned, she adamantly responded, “absolutely”. 
 
 After six months in jail, Letourneau was granted parole on the condition she did not see Fualaau, who was just 1.5 years older than her eldest son. 
 
 Less than a month later, police interrupted the couple having sex in a car. 
 
 She was then sent back to jail after violating her condition, and ordered to serve out the balance of her sentence. But by then she was already pregnant with Fualaau’s second child — her sixth — and gave birth in prison. 
 
 Audrey, 21, was born after Letourneau’s initial arrest, while Georgia, 19, was born behind bars. Both girls were raised by Mr Fualaau’s mother up until Letourneau’s release. 
 
 Letourneau and Mr Fualaau then married in 2005. But last year, he allegedly filed for separation however withdrew the request, despite admitting to Sunday Night there are problems within their marriage. 
 
 He said he had thought about leaving the relationship but Letourneau said she was still madly in love with her husband, now age 35. “Anyone that’s married knows that it’s a labour in love,” she said. 
 
 During the Sunday Night interview, Letourneau jumped on the defence again when pressured by Doran to admit she “should have known better”. 
 
 Letourneau turned to her husband and repeatedly asked him “who was the boss, who was the boss back then”, saying that he had pursued her. “He did say he was in love with me,” she said. “Flaw me, I did the best I could.” 
 
 She had previously claimed how Mr Fualaau instigated the sexual relationship with his increasingly aggressive advances. 
 
 For the first time, the couple’s daughters spoke about growing up in such a famous household. 
 
 Audrey said it didn’t feel different to her and her sister because it wasn’t brought to their attention. “It’s kind of surprising to people but it’s normal for us because we’ve adapted to it,” she said. 
 
 The 21-year-old then said her father, who is just 13 years her senior, was like a “friend dad”. 
 
 Both Audrey and Georgia recently moved out of the family home. Letourneau and Mr Fualaau still live together. 
 
 Today, Letourneau works as a paralegal at the same court where she faced trial 21 years ago. 
 
 She hopes use her new skills in her fight to remove her name from the sex offenders’ registry. ||||| Airing on “20/20” 
 
 Friday, April 10, 10 pm ET on ABC 
 
 In an exclusive interview with Barbara Walters, Mary Kay Letourneau Fualaau and Vili Fualaau sit down together on the eve of their 10th wedding anniversary, sharing intimate details about their headline-making marriage. Mary Kay Letourneau Fualaau is the former Seattle-area sixth-grade teacher who, at the age of 34, had an affair with her 13-year-old student, Vili Fualaau, and served seven and a half years for their inappropriate relationship. In the candid interview, Mary Kay tells Walters what makes their marriage work in spite of their huge difference in their age. She also discusses her surprising plans to teach again, as well as her intentions to have her status as a registered sex offender lifted. Vili Fualaau, meanwhile, discusses his bouts with alcoholism, depression and why he believes the system failed him while he was still a minor. 
 
 Also, for the first time ever, viewers will meet their two teenage daughters, Audrey and Georgia, who are now older than Vili was when he conceived them. The interview airs on “20/20” on FRIDAY, APRIL 10, 2015 (10:00 – 11:00 pm ET) on the ABC TELEVISION NETWORK. 
 
 Letourneau first spoke to Walters in 2004 after being released from prison. At that time, she said that she wanted to marry her former student, who was 13 when their liaison began. “We’ve always planned that and it hasn’t changed,” she told Walters.
– The mother of all teacher-student sex scandals is returning to the national spotlight—just ahead of the 10th wedding anniversary of the two people involved. That would be Mary Kay Letourneau and husband Vili Fualaau, whose interview with Barbara Walters airs on ABC tomorrow night. Letourneau is 53 and Fualaau 31, but their relationship made national headlines when Letourneau became pregnant with Fualaau's child when he was all of 13. She had been his sixth-grade teacher. Letourneau spent nearly eight years in jail, but the couple stayed together and now have two teenage daughters, Audrey and Georgia. ABC is providing a few teasers, including the nugget that Letourneau wants to teach again, presumably only after getting her status as a sex offender lifted. Fualaau, meanwhile, will discuss his struggles with alcoholism and depression, notes Us Weekly. "It was a huge change in my life, for sure," Fualaau recalls of the scandal. "I don't feel like I had the right support or the right help behind me ... from my family, from anyone in general. I mean, my friends couldn't help me because they had no idea what, what it was like to be a parent, I mean, because we were all 14, 15." Letourneau says they did the interview in part because they figured they'd be deluged with attention ahead of their May 20 anniversary, like it or not. "So it's about doing the most responsible thing to protect our girls for the inevitable."