Selling Sunset Season 9 is now streaming on Netflix, and the new episodes are full of drama. One of the biggest shocks this season is the fallout between Mary Bonnet and Chelsea Lazkani. Fans had seen them work together in the past. But in the new season, their friendship breaks down completely. Both of them make it clear that they are not trying to fix things.

The main question viewers have is what actually caused their bond to fall apart. The tension between them did not start in Season 9. It goes back to Season 8. In that season, Mary and Chelsea worked as co listing agents. They even invited the entire office to a large open house event. Things got messy when Chelsea showed up late. Mary was annoyed and later complained to Jason and Brett. She said Chelsea was one hour late and also pointed out that people at the event were making comments about Chelsea’s outfit. Mary said her clothes did not look professional and drew too much attention.

Chelsea was wearing a short skirt and a blazer. Brett told her to tone down the outfit a little because it was a formal brokers event. Chelsea was confused and hurt by the comments. She felt Mary should not have spoken about her clothing in front of two men. She also pointed out that Mary sometimes wears tops that show cleavage, so she did not understand the double standard. This moment marked the beginning of their issues.

Things became even worse in Season 9. Mary’s home was robbed in the middle of filming. Chelsea sent her flowers to comfort her. But Mary felt the gesture was strange and badly timed. She believed Chelsea should not have known what was happening that day. Mary thought there was something off about the situation and even questioned the producers. Bre Tiesi, who is close to Mary, threw the flowers in the trash because she felt the moment had been turned into drama.

Mary later said in an interview that she did not fully trust Chelsea’s intentions. She believed there was some planning involved behind the scenes. Chelsea denied this. She said she only wanted to send support and positive energy because Mary was going through trauma. She also explained that she becomes awkward on camera and felt misunderstood.

By the end of the season, it was clear that their friendship would not return to normal. Mary still follows Chelsea on Instagram, but Chelsea does not follow her back. Mary was emotional about the situation and said she no longer wanted to be pulled into drama she did not create. Their bond, which once looked promising, simply could not survive the misunderstandings, timing issues, and loss of trust.