Strongman champion Luke Stoltman’s wife, Kushi Stoltman, accused him of cheating on her with multiple people during their marriage in a heartbreaking note posted to her Instagram on Wednesday.

In it, Kushi, a 31-year-old content creator, alleged that Stoltman had an affair with a female powerlifter without her knowledge while she was undergoing IVF treatments.

Kushi gave birth to their son, Koa Devaki Stoltman, on January 2 after years of trying to conceive.

“I thought my world was complete, I had to go through so much heartache to have my beautiful baby boy and finally get pregnant and get that happily ever after, which is what I always wanted with my husband, after so many years of trying to have,” Kushi wrote.

“Cheating on me with multiple women AND men throughout our entire marriage, when I was pregnant, and then continuing. While I was undergoing IVF, my husband had an affair that I was completely unaware of.

“Our son is now 9 months old and this weekend after our son was so sick in hospital and Luke refused to come and visit him in hospital because he was with another woman behind my back.”

Kushi ended the note with the name of the woman she accused her husband of having an affair with.

“I am absolutely heartbroken and devastated that someone could be so cruel and mean,” she wrote. “He is not the man he portrays himself to be.

“Thank you so much Luke Stoltman… for torturing me. I have no idea how people in this world can be so cruel.”

Stoltman, who is currently the strongest man in Europe, has not yet publicly discussed the situation.

“This is all true, I’m afraid,” Kushi told The Scottish Sun.

In her caption, Kushi said that her Instagram was not hacked.

“I am absolutely devastated and what I have experienced is inexcusable,” she wrote. “People can portray themselves in public in a certain way, but their true nature always comes out in the end.

“No, I have not been hacked and I am devastated at how a man could put his family through this.”

Stoltman has won five national titles.

His younger brother, Tom Stoltman, 30, is the current strongest man in the world.

Tom’s wife, Sinead, posted two white heart emojis in the comments of Kushi’s post.