This article contains spoilers for the Season 9 finale of "Love Is Blind."

Netflix's hit dating series "Love is Blind" is actually an experiment, its creator, Chris Coelen, says. The show tests whether couples can build a lasting relationship based on a core emotional bond that is not tethered to physical attraction or appearances.

In Season 9, for the first time in the show's history, the experiment failed to create lasting bonds. No couples from this season said "I do" at the altar in the finale, which began streaming Wednesday.

Six couples left the pods engaged, but the decoupling began almost immediately, with Kacie McIntosh breaking things off with Patrick Suzuki. They were followed by Annie Lancaster and Nick Amato, and finally Madison Maidenberg and Joe Ferrucci, whose breakups were documented in Episodes 10 and 11. The remaining couples going into the final episode, where the weddings would take place, were Ali Lima and Anton Yarosh; Kalybriah Haskin and Edmond Harvey; and Megan Walerius and Jordan Keltner.

Megan and Jordan didn't make it to the altar -- Megan broke things off just before the wedding because she felt their lifestyles would not mesh well long term. That partly had to do with their jobs. Jordan works long hours in transportation and logistics, while Megan is a wealthy entrepreneur with a flexible working schedule. Jordan is also a single father to a young son, who has Type 1 diabetes. Over the course of the season, the pair often discussed the demands of parenting.

Anton said "I do," but Ali said "I can't be your wife" at the altar. She said she felt like the man she had fallen in love with in the pods was not the person she'd been experiencing in real life before she ran off in tears. Anton said in an interview later that he had "done nothing but care for her," and that the rejection "f -- sucks."

Kalybriah also said no at the altar after her fiancé said yes. Kalybriah said Edmond "deserve[s] someone that is 100% at the altar" and that she wasn't there. Edmond had a tempered reaction to the rejection, and Kalybriah thanked him for being graceful before the two walked off hand in hand. Kalybriah left the door open for a possible reconciliation down the road.

Season 9 was full of messy breakups and controversial comments from the participants. Patrick went into the experiment with insecurities about his Asian American identity, and his short-lived fiancée, Kacie, broke up with him on the heels of their first meeting. Annie and Nick, who split before the wedding preparations were in full swing, received backlash over a conversation they had about raising LGBTQ+ children, and they have both since walked back those comments in recent interviews. And an argument between Kalybriah and Edmond about her decision to wait until the wedding to have sex with him was the subject of intense scrutiny on social media.

Before Season 9, each season ended with at least one couple getting married. While some later split, many still remain married and several have started families. Days before Season 9's finale was released, Cameron Hamilton and Lauren Speed-Hamilton from Season 1 announced Monday that they welcomed their first child together.

The Season 9 reunion, which will address unanswered questions about the many breakups, will be available to stream on Netflix on Oct. 29 at 6 p.m. PT/ 9 p.m. ET.

'Love is Blind' Season 9 finale ends with a dramatic first. Here's what happened