cortney married at first sight finale Cortney is very confident about her feelings in the "Married At First Sight" Season 1 finale sneak peek. Photo: A+E Networks

Married at First Sight” will finish Season 1 next Tuesday on FYI, and the couples must decide if they want to stay married. The three couples have been together for just over a month and now have to decide if the experiment worked: Are their perfect matches on paper actually their soulmates? In a sneak peek from the “Married At First Sight” finale, one wife seems very sure that this experiment worked out for her.

Cortney uses her personal camera to explain her feelings for Jason. She doesn't care that her husband still has trouble being vulnerable with her.

"I know he’s scared that I might be one of those other people in his life that just disappears when it gets a little tough, but you know what? Things get tough. Things get weird," Cortney says in the sneak peek. "But if you’re strong and you know who you are, you can get through anything. So Mr. Jason Nicholas Carrion, I love you. And I want you to make me Mrs. Carrion."

That makes one person who is sure of what she wants. Monet and Vaughn both seem unsure if the experiment was successful. “I don’t know what Vaughn and I are going to do,” Monet tells the cameras. “I don’t know if we’re going to stay married. I don’t know if we’re going get a divorce. I’m really not sure what’s going to happen.”

Doug seems to be a more secure in what he wants, but Jamie might not be ready for marriage.

“I’m nervous about what Jamie is going to decide,” Doug says. “If it works out, it’s the greatest experiment ever. If it fails, I’m going to be sad.”

Watch the sneak peek below:

“Married At First Sight” Season 1 finale airs Tuesday, Sept. 9, on FYI. Which couple do you think is most likely to get a divorce? Sound off in the comments section below!