"I had no idea who she was," Butler said in the interview. "I kept saying, 'What are you doing,' and she said, 'Doesn't matter, not important.'"
The reality star ended up going on Twitter to "set the record straight," but in the event her account fell on deaf ears, she elaborated in a lengthy letter to "Gerry," even giving credit for her newfound voice to the #TimesUp movement.
"I'm not exactly sure when misogyny became so hip, cool and accepted but what I will tell you is that I won't f-cking stand for it anymore!" Glanville wrote. "I'm talking to you, Gerard Butler! Honestly who the f-ck do you think you are? You, Mr. 'movie star,' can choke on your own...ego. Not that I even remember your last hit movie but it seems like '300' was years ago."
"I would like to make something crystal f-cking clear to you," she continued. "Your behavior the other night, publicly acting as if you were embarrassed to have ever met me or had relations with me as if I were some horrid decrepit troll is not only disgusting but unacceptable. #TimesUp on this kind of behavior."
"Respect the women you invite into your bed and into your life," she wrote. "Whether you know their last name or not! Whether they are famous or not! Just be a proper human being. Imagine that some man was on TV speaking of your mother, sister, daughter or even friend cringing with embarrassment. Exactly the way you acted and spoke of me. Well my two sons Mason, 14 and Jake, 10 don't have to imagine it because it just happened to them, to me and to all of us. With the Me Too movement I have found my voice again and I refuse to stay quiet. I may not have been sexually harassed but I have been humiliated, embarrassed, financially tortured and emotionally abused by men in power, in my work life and by men like you in my personal life."
Glanville, who appeared on "Watch What Happens Live" back in January 2017, said at the time that she and Butler "had a little week of fun" and gave the actor an "11" out of 10 when asked to rate his skills in bed.
According to her open letter, Glanville said her "WWHL" interview took place "many, many years ago" and that her comment was in response to the question: "Who is the most famous person you have ever slept with?"
"Number one, why do you think you are such a damn prize and what the f-ck would have changed if you had known my last name??" she wrote. "Many, many years ago I was on a fairly new late night talk show called 'Watch What Happens Live' and I was asked who was the most famous man I had ever slept with. At that time you were kind of a big thing so I said your name. I then was asked on a scale from 1-10 what would I rate you as a lover. I very kindly said an 11. I was completely caught off guard obviously not expecting any of these questions and the moment after I answered them I regretted it."
Glanville went on to say she "NEVER in God's world imagined" she would be on television being asked the question she was asked. "I honestly never sought out the life that I live now filled with insecurities, trust issues and doubt," she wrote, adding that if it were up to her, she would be "f-cking happily married to a 'faithful' Eddie Cibrian quietly-ish raising our 2 beautiful boys with no cameras other than the ones he worked in front of."
"You seem to be caught up on the fact that I didn't tell you my last name or what I did for work before we actually 'hooked up,'" Glanville also added. "When I'm out at a party and someone walks up to me and says hi what's your name, like most people I simply say 'hi I'm Brandi nice to meet you.' Furthermore if you have to tell someone you're famous...you're not only an asshole but you clearly are not that f-cking famous!!!"
After rhetorically asking Butler if he was "too big of a movie star to be associated with lowly reality television personalities," Glanville concluded her letter by writing, "I think you suck and my dad wants to kick your ass."
To read the scathing piece in its entirety, click here.