As the night progressed, fans were quick to pin the couple as a sure-bet in being one of the show's success stories, but things took a turn during the couple's honeymoon.
Their relationship went down an awkward path during a pottery date, where Selin got angry after Anthony smeared her face with clay, which triggered an argument.
Later on, Selin told Anthony that she doesn’t feel a spark and doesn’t believe he has what it takes to protect her emotionally and mentally.
Things eventually escalated to Anthony packing his bags and leaving his wife to enjoy the rest of the honeymoon on her own, after an explosive argument between the two.
His decision to leave made a big impact on their relationship, as they later decided to stay in separate rooms when they made it to the hotel.
We also saw the situation play out at the first dinner party, with Selin telling her side of events to all the guests - essentially throwing Anthony under the bus.
Speaking to TV WEEK after the episode aired, Selin claimed Anthony "went in and out of character quite frequently" and felt that it wasn't authentic.
"He wasn't genuine. And I found it really hard to appreciate it because it didn't feel real. Maybe I would have appreciated all the gestures if it was real," she said.
"It was very difficult for me to get to know him. I didn't know which one he was. It wasn't the gentleman that he painted himself to be, and I was okay with that. I'm not saying he's a terrible person, but I just didn't get the real him."
As for Anthony, he told TV WEEK that it "felt like there was a brick wall" between himself and Selin, adding: "I'm not used to being shut down like that in relationships. You can't hold a grudge. I wish she'd been a little bit nicer about it but that's not Selin's way."
While the pair did eventually put aside their differences and move into a much better dynamic, it wasn't long before they clashed again.
Ahead of the third dinner party this season, Selin admitted she'd come to the point where everything Anthony did annoyed her and turned her off, leaving Anthony at his wits’ end.
Their tumultuous relationship really came to a head at the dinner party when, after repeated public criticism, Anthony finally unleashed on Selin, leaving everyone at the table stunned.
"I'm giving you so much and I'm getting absolutely nothing back," Anthony exclaimed, before later telling Selin she "doesn't have the capability for a relationship".
In what seemed like a long time coming, the pair finally called it quits on their relationship and their time in the experiment at the third Commitment Ceremony.
Writing down leave, Anthony explained that he needed a “spark” and “flare” in his life, as well as “that excitement” in a relationship.
“I need to be able to connect with somebody and I'm just not feeling that,” Anthony told the experts of his decision to leave.
Selin on the other hand, made her decision ever so clear as she wrote down “I'm done!” on her card to indicate she was ready to go.
So, where does this leave things for the two since the show wrapped? Well it appears Anthony has already moved on and found himself a new lady.
According to gossip site The Wash, they received a photo of Anthony on what was described as a date over in Melbourne in early February. He was later spotted out with the same girl on a separate occasion.
Plus, after his TV exit aired, Anthony took to Facebook to thank "his lady" Kate, who he credited for "pulling me through when I needed it."
"I am on to the next chapter of my life," he added.
Meanwhile, Selin was photographed running errands near her home in Sydney around the same time, where she has been living with her son since filming wrapped.
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