This was about you and the way that you treated me," Lauren O'Brien tells PEOPLE of ex Dave BettenburgWarning: this story contains spoilers from episodes 1-12 of Love Is Blind season 8.Lauren O'Brien can pinpoint the exact moment she knew her engagement to David "Dave" Bettenberg was over.

When Dave said he had mutual friends with two of Lauren's exes, she said they were never official boyfriends. However, Dave struggled with the fact that his fiancé was talking with another man shortly before appearing on "Love Is Blind," especially since he hadn't had a girlfriend in four years.

"You see him question my dad and it's his friends and it's his sister, and it's all of these things," Lauren O'Brien tells PEOPLE of ex Dave Bettenburg's reasons for ending their engagement

Newly engaged couple Dave and Lauren clash over Lauren's dating history in the latest installment of episodes from Season 8.

Love Is Blind stars Lauren O’Brien and David “Dave” Bettenburg were the first engaged couple of season 8 to call it quits, and she recently revealed the moment she knew their relationship could never work.

Dave Bettenburg is taking responsibility for the way his Love Is Blind engagement with Lauren O’Brien ended. “I’m far from perfect and I’m not here for sympathy. This experiment was very difficult and I’ve learned a lot this past year,

I t’s probably for the best that Dave Bettenburg and Lauren O’Brien realized they weren’t a good match before they got to their wedding fittings in Love Is Blind season eigh

Love Is Blind star Molly Mullaney returned in episode 11 and she arrived with some bad news for Lauren O’Brien. Before Molly, 30, showed up in the episode that aired on Friday8, Lauren, 31, and her fiancé,