The "Vanderpump Rules" star tells Andy Cohen, "I was loving him, I was hating him, I couldn't stand to be around him, and then I wanted him to be right beside me all the time."
Despite boyfriend Jax Taylor's infidelity, Brittany chose to stick around, even after Lala Kent and Ariana Madix handed her audio footage of Jax telling Faith -- the former SUR server with whom he cheated -- that he would never marry Brittany or have kids with her and that their relationship was totally sexless.
So why did she stay with him?
"He definitely retracted a bunch of times everything that he said," Brittany told Andy Cohen. "Obviously, we know that things were said like that. I don't know how to explain it. I was so confused. I was loving him, I was hating him, I couldn't stand to be around him, and then I wanted him to be right beside me all the time. It was just such a confusing time."
Although Brittany appeared calm, cool and collected now, she was far from that the night she heard the footage. In fact, she ended up playing it for all her and Jax's friends to hear. The next day, Jax told Brittany he was left speechless that she would do such a thing.
"There's just no excuse," he said to her. "You gave me your word as a woman that you said it was gonna be you and me. You brought it up in front of everybody. Take responsibility for your own actions. You could've said, 'No, I'm not doing that.' You could've said no. You could've said no. You shouldn't have brought it up."
Jax added, "It was so wrong in so many ways. In my house. I am not dating f-cking the rest of this f-cking group! You f-cking dug below the belt."
When Andy pressed Brittany about Jax flipping the script, Brittant said they dealt with that specific situation "for a long time."
"I was so pissed when he tried to turn it," she said. "I felt like he was just trying to turn everything around on me and try to make me feel guilt. I'm just glad that I finally had a bad-ass moment and was like, 'Everyone listen!' When you're going through something like this, you don't know what you're feeling, ever."
Brittany also reveled she's attempted to reach out to Faith -- her former friend -- numerous times but that Faith has never texted her back.
Andy then told Brittany that 95 percent of viewers who voted said she should not have taken Jax back, to which she replied, "I already knew that."
So what's her message to those people and her online critics?
"I just don't get cyber-bullies and never will," she said. "You should always promote happiness and try to be as positive as you can."
"Vanderpump Rules" airs Monday nights at 9 p.m. on Bravo."