I busted my boyfriend for cheating — when he lasted too long in bed

It was a blessing and a curse.

A jilted woman is going viral after revealing how she figured out that her boyfriend was cheating — when he unexpectedly got better in bed.

The sexy sleuth elaborated on her discovery in a recent TikTok repost detailing his suspicious longevity in the sack. The original clip reportedly amassed more than 700,000 views before her account was suspended for unrelated reasons, according to Jam Press.

“He lasted longer than usual in bed,” 22-year-old Pernille Torhov, from Norway, said of the tantalizing tell — which she noticed during a lovemaking session just after her beau had returned from a trip. She claimed that they had been dating for four months when he told her he was going on a jaunt to a cabin with his pals.

Alarm bells went off after the couple made whoopie upon his return, and Torhov noticed that a change in his boudoir performance.

Specifically, her boyfriend took his time in the sack, which Torhov deemed odd as “it had been a week since we last saw each other.”

“I was thinking to myself that it was a bit strange, but didn’t say anything to him,” said the suspicious Norwegian, who decided to turn a “blind eye” to her beau’s behavior because she was “so in love with this man.”

Torhov tried to convince herself that she was “overthinking” things, but her initial suspicions were confirmed after the cheater came clean via a Snapchat message.

“I feel pretty bad and I’m disappointed in myself because there’s something I haven’t told you,” the alleged digital confession read. “One of the boys invited two girls on our cabin trip, and I ended up sleeping with one of them.”

The remorseful man went on to claim that he had no “desire to do anything” with those women, but things took a turn after one of the gals “had to sleep over because they couldn’t get home” — and there were only two beds, he claimed.

“She slept in my room, and it went as it did, but that’s no excuse anyway, I thought it was stupid of me,” the bozo insisted.

He also pointed out that while he and Torhov had not previously established an “exclusive” relationship, his conscious weighed heavy after the time they’d spent together — insisting that he is “quite disappointed” with himself. “This is really not the person I want to be.”

Torhov was devastated by the admission.

“When I read the message I was kind of shocked and obviously very sad,” said the crestfallen gal. “He came home to me and had sex with me straight after he had sex with the girl on the cabin trip,” she lamented.

She was furthermore disappointed with his delivery — via social media app. Insisting they break up “face-to-face” — the star-crossed lovers would rekindle their romance in the end.

“I decided to give him a second chance and he’s turned out to be a very sweet and nice boy,” Torhov said.