Keith says that eight months ago, he discovered that his wife of 18 years, Sarah, was messaging and sexting African men online. He said they agreed to work on their marriage and pray for each other – but recently, Keith says she dropped a bombshell.

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“Sarah said she no longer loves me, and she wants to start a new life with some guy from Kenya named Kevin she’s never even met other than online,” Keith says. “She said she wants to divorce me and abandon me and my four children.”

Keith says Sarah, who was the church secretary, “perfect” housewife, and mother who homeschooled their children, started to change two years ago after she went to see a Nigerian natural doctor.

“She lost 15 pounds, changed her diet, and stopped breastfeeding. I wasn’t physically attractive to her anymore,” Keith recalls of the woman he calls the “love of my life.” “I was devastated. She lost interest in being intimate with me.”

WATCH: Woman Says She’s Ready To Divorce Husband For Younger Kenyan Man With Whom She’s Been Sexting And Having An Online Affair

Keith, who says he’s “beyond angry,” says he fears Sarah is being “blinded” by her online love.

“I think Sarah’s being brainwashed,” Keith says. “If Sarah goes to Africa, she may end up disappearing in the jungle and getting eaten by lions or jackals. I hope that Dr. Phil can help me. The Sarah that I married would’ve never wanted to leave me.”

Hear more of Keith’s story in the video above. And on Friday’s episode of Dr. Phil, see what a Dr. Phil team discovers when they go to Kenya in search of Kevin. Is Kevin real? Is he scamming Sarah? Check here to see where you can watch.

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Family Claims Loved One Is Being Scammed By Kenyan Boyfriend Whom She Plans To Marry