McCartan was doing a Q&A on his Instagram when he claimed that in 2016, his fiancée cheated on him and left. Fans quickly deduced that he was referring to Cameron, who he was engaged to in 2016. The couple were together for three years and engaged for less than six months before splitting.
Someone had asked the 26-year-old what the proudest moment of his life was, and he chose the reported infidelity angle to discuss how proud he was of himself for getting through one of the most challenging times of his life. He went on to talk about what happened to him after Cameron allegedly cheated.
"I almost died from food poisoning and Donald Trump was elected president. I truly didn't think I would be able to make it through that part of my life."
News of the actor's allegations spread to Cameron's social media feed. She responded with a subtle dig on her Twitter.
The Disney Channel actress found a photo with the following phrase.
"When a toxic person can no longer control you, they will try to control how others see you."
She quote-tweeted the image with her own response of "beautiful."
Her followers believed she was throwing shade at McCartan's remarks.