"My girlfriend f--ked Harry Hamlin in muskoka for an entire summer in 2018 – you wanna talk about that @lisarinna ??? Or do you want to talk about his affair with Patricia? #RHOBH #wwhl," the message read.
The anonymous source followed up with a second tweet, writing, "I don't have any receipts but it's legit. He told @lisarinna he's 'off the grid' for a few days and then literally spent an entire 2 days in my friends bedroom and at her cottage. Patricia is a muskoka whore that everyone knows, Harry included."
I don’t have any receipts but it’s legit. He told @lisarinna he’s “off the grid” for a few days and then literally spent an entire 2 days in my friends bedroom and at her cottage. Patricia is a muskoka whore that everyone knows, Harry included. #rhobh#wwhl
With her trademark sense of wit, Rinna hilariously responded.
"Yeah and I watched it was hot as hell 🔥Patricia well she’s kind of downer I did't like her so much. 😂"
And Rinna wasn't done just yet confronting the allegations against her husband of 22 years, as she referenced them in an Instagram post on Friday.
"#Fbf Appreciation Post to my very busy Husband who apparently doesn't live with us, is having a lot of affairs, and is gay," she wrote alongside Hamlin's Sexiest Man Alive PEOPLE cover from 1987, before adding, "Go Harry Fu*king Hamlin."
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Meanwhile, social media became obsessed with finding out the identity of "Patricia" from Muskoka.
"Patricia!!! Where you at??? We need you!!!!," wrote a follower, as another posted, "Patricia is ICONIC! I don’t know Patricia but I’m hoping [sic] in my Volks and I’ll be in Muskoka by midnight to get all the tea."
One fan even suggested there could be a Bravo link between the parties, writing, "If Patricia is Patricia Altschul from Southern Charm, I would watch every second of that."
And Altschul -- taking a page from Rinna -- replied, "Yep… it was me !!"