On Wednesday night's episode of Married at First Sight: Unfiltered, Jacob watched back a Season 12 clip in which Jacob told Haley she should have just asked for a break on their Las Vegas honeymoon rather than telling him she was having a girls' night, which he believed was a lie since some of the MAFS grooms were in attendance.
"The cordial thing to do would be to say, 'Hey, we're hanging out, want to come down?' And then you didn't. Those little white lies, they add up," Jacob says in the clip.
"I did not lie!" Haley insists.
"You lied. And that's the thing that's killing me, is you don't have accountability... I don't think we'll be here [in our new apartment] too long."
Haley pointed out that she and Jacob had two different realities of what happened, and then Jacob adds in the clip, "Yeah, we do. Actually reality and then Haley's bullsh-t. That's what we have right now."
"Not my proudest moment obviously," Jacob replied. "I was trying to talk some of this stuff out when it was just the two of us."
He continued, "You know, like, I wanted to talk to her on the plane ride home [from Las Vegas] and she moved her seat. I was sitting next to some hillbilly who was farting the whole time. So that [time in the apartment] was the first time we had really hashed it out."
When asked what caused him to be so defensive, Jacob accused Haley of not being authentic or genuine at all times.
"Haley and I are very close and so maybe it was just, like, a big miscommunication," Paige told Jamie.
"I can understand both parties -- how [Jacob] felt effected, as well as some things that may just be reactionary and you maybe not mean it in the moment -- that can sting a little bit, and you don't want to bring a lot of tension and frustration and miscommunication so early on in your marriage."
Looking back, Jacob wished he had handled that tense conversation with Haley a little differently.
"It came out very kind of vicious in a way that I didn't really intend to," Jacob said. "I wish we could have had a calm, normal, full disclosure kind of conversation."
"At this point, I'm not really vibing with his personality, and so that's when I was starting to back away," Haley said.
It took time for Haley and Jacob to work through their disagreement over the alleged girls' night, mainly because Jacob also apparently accused Haley of having a boyfriend back home.
Haley noted it was "insulting" and "ridiculous" for Jacob to even think she was cheating on him.
"I've never felt energy just completely cut off... You said, 'It's a girls night,' and then it wasn't a girls night," Jacob told Haley, adding, "I had that situation in my past, so when you did that, it messed with me pretty good and I lost trust."
Not only did Jacob accuse Haley of being a liar, but he also called her "high-strung" and said, "You have anxiety."
The couple slept in separate beds that night but Jacob ultimately apologized to his wife for how he had treated her.
Haley therefore admitted she felt "drained" but there might still be a chance "for something positive to come out of this."
On the latest episode of Married at First Sight's twelfth season, Haley vented to her friend Lauren about how she and Jacob had communication issues and she started backing off due to his obsession with the 80s and "goofy" wardrobe.
"I know your immediate reaction to things is to run and to shut down, but I think you should keep pushing through and give it the chance he deserves," Lauren said.
Meanwhile, Jacob feared that if the roles reversed and Haley finally let her walls down and opened up to him, he might be checked out of the marriage at that point and hurt her.
Jacob was admittedly dealing with many insecurities because Haley had allegedly been acting cold to him.
But Jacob and Haley found themselves in a better place when hosting a housewarming party at their new apartment.
Jacob's friend explained to Haley that Jacob is a standup guy who's straightforward and fails to pick up on social cues sometimes, and Jacob was warned that Haley was a bit of a commitment phobe who used to shut down early in relationships.