He wasn’t too keen on her sextra-curricular activities.

A UK man who stood by his wife after she slept with a 15-year-old student has left her following a revelation he made while visiting her in jail.

“Until you’re in that position, when it’s your wife or your husband and you’re living that life, you don’t know what you’re going to do,” Daniel Barber, 40, told the Daily Mail of the sordid saga.

He added, “I’m a man. It’s bad enough to be told your wife has slept with someone else but for it to be a child . . . It deflates you completely. You look at yourself and think: ‘What have I done wrong?’ “

His now-ex-wife Kandice Barber, a teacher in Princes Risborough, had been found guilty in 2021 of convincing a minor to engage in sexual activity. The judge labeled her “beyond despicable” over the scandalous act.

The sordid saga began in 2018 after the mother of three boys had reportedly groomed the teen via Snapchat messages — including a photo of her posing topless and a video of a deed — before taking him to a field where they had intercourse.

Daniel first became aware of his wife of five years’ alleged infidelities and illegal acts in 2019 after police entered his home while he was preparing for work as a trainee supermarket manager.

“Kan had gone off to work as normal,” the Brit recalled. “She gave me a kiss, and said: ‘Have a good day.’ “Twenty minutes later my door opened. I came to the top of the stairs and it was the police.”

He continued, “The children were in bed. I went into the kitchen. They said they couldn’t tell me what she was accused of. I said, because she worked at a school, it can only be one thing.”

Daniel’s worst fears were confirmed after a police officer wrote something on a piece of paper and slid it to him. While he couldn’t remember exactly what it said, the grocery store employee knew it was child-related — a revelation that caused him to go “into shock.”

“I was pale as a ghost. My teeth were chattering. I couldn’t talk,” the aghast dad recounted. “Couldn’t process it. It [child sex abuse] is not something you’d ever want to be associated with.”

After being questioned at High Wycombe police station, Kandice was released from custody later that day. Her concerned hubby confronted her about the allegations, which she insisted were “all lies.”

Daniel recalled, “I said: ‘If you were going to cheat on me we wouldn’t have survived it, but why could it not have been with someone your own age. I wouldn’t be picking you up from a police station. Potentially, you’re going to go to prison.’ She cried.”

Less than a year later, Kandice had to undergo a two-week trial, during which Danny submitted evidence. He was forced to hear the sordid details of his wife’s alleged tryst, including a text message she sent the student, which read: “You have a bigger penis than my husband.”

Despite the humiliating ordeal, Daniel stuck by his wife’s side. “She was adamant she was innocent. I loved her and I believed her,” declared the devastated Brit, who didn’t want to her three kids [which were from two prior relationships] to be “ripped apart” by the scandal. He had two teenage sons of his own.

Kandice was eventually slapped with multiple charges, including three counts of causing or inciting a child aged under 16 years to engage in a sexual act, and one count of sexual communication with a child.

She was also charged with one count of causing or inciting a child to engage in sexual activities while in a position of trust, and one count of causing a child to watch a sexual act by a person in a position of trust.

Despite the mountain of purported evidence, Kandice was adamant that she was innocent.

When she was sentenced to six years in prison, her stalwart partner posted a pic on social media of a Superman T-shirt affixed with a note that read, “I love you with all of my heart. Be brave.”

However, Daniel’s opinion of his paramour soured one day after he visited her in the clink.

“When I took the kids to visit Kan in prison, she’d be smiling and bubbly and happy,” the flabbergasted supermarket boss recalled. “Her hair was done. I’d sit there and feel: ‘This is wrong. You’re smiling and happy in a place we shouldn’t be coming to visit you.'”

Meanwhile, Daniel was on antidepressants and sleeping pills because he “couldn’t shut down” due to the psychological torment of the saga. “I couldn’t process what was happening,” he lamented. “I was averaging two hours’ sleep a night.”

The scorned man said he found coping particularly difficult as people were claiming that infidelity “must be a family thing… he must be doing it as well.”

“Kan would say she was the one suffering because she was in prison,” Daniel described. “I’d say: ‘No, I’m in prison out here having to deal with the backlash.’ I was the husband of the teacher who slept with a 15-year-old.”

Things came to a head after Kandice phoned her now-estranged partner “wanting to be romantic.”

“I didn’t want to,” said Daniel. “She got all upset and it kind of festered from there.”

He continued, “I began to see Kan differently. I started avoiding her. She would call but I wasn’t really picking up. I didn’t really want to interact with her.”

The pair eventually filed for divorce and Daniel is now with another woman, named Charlotte, with whom he’s expecting a baby boy in the fall. It took the Brit six weeks to muster up the courage to tell her about his prior marital fiasco.

“How do you say to someone: ‘Oh by the way, darling, I’m married but my wife’s in prison because she’s been sentenced to six years for having sex with a child’?” he said.

Meanwhile, Kandice currently works as a gate attendant at a construction site — a gig she reportedly loves. “She’s attractive looking, so she’s already proving a hit with the lads, who have no idea about her background,” sources told the Sun. “It’s no secret she’s a massive flirt and lots of the staff there have already noticed her.”

The disgraced teacher is slated to be released from jail early next year, after serving half of her sentence.

In retrospect, Daniel says he now has a new perspective on his wife’s alleged crime.

“If any teacher ever touched my son I’d want justice. I think every parent would say the same,” he said. “I just wish there was a way I could find out what Kan actually did. It doesn’t make sense and it’s never going to make sense.”