Jef Holm says he has no idea why his brother would accuse Emily Maynard of cheating on him and insists, adamantly, that The Bachelorette couple is fine.
Earlier this week, Us broke the "story" that Emily was sexting behind Jef's back, and that their family vacation ended early and tumultuously as a result.
The couple quickly denied the tabloid cover story, only to learn that the source of the report was Jef's brother Mike Holm ... who stood by it a second time.
That has Jef in disbelief - and denying it all over again.
"My family all says they are shocked, and obviously I'm shocked," Jef says of Mike, who vacationed with the Holms, Maynard and her daughter last weekend. But, he adds, if everybody knew the history he had with our family, no one would be surprised."
An emotional Jef Holm and Emily Maynard slammed the story, again.
"This whole story is 100 percent false," he reiterates.