Big Brother couple Jack Matthews and Analyse Talavera have announced they've decided to split and go their separate ways.

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Jack, 28, and Analyse, a 22-year-old who was nicknamed "Sis" during the Big Brother season, both took to Instagram on Tuesday to reveal they've broken up, just a little over one month after Big Brother's Season 21 finale aired on CBS.

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"This has been a difficult week, mostly because of something that's been going on in my life," Jack captioned a photo of the pair, who hooked up during most of their time in the Big Brother house this past summer.

"I believe it's best to update all of the supporters and fans that we appreciate so much, on what is happening in Janalyse's life... Sis and I have decided to take a break, no hard feelings, no bad blood but with absolute LOVE in our hearts."

Jack then addressed Analyse and wrote, "You brought me a joy like no other girl ever could at a time I needed it most. You brought out the best in me by simply being you. Your love has lifted me to the greatest heights imaginable."

"You've taught me so much over this summer and we've created beautiful memories that I will never forget," he added.

"I'm glad that we were able to be there for each other and we'll always be friends and partners forever. I Love You Sis️."

Jack and Analyse clearly ended on amicable terms, as Analyse commented on Jack's post with two heart emojis and wrote a beautiful message of her own in her Instagram Stories.

Analyse's lengthy statement started out by thanking all of her fans and the people who had backed her relationship with Jack from the start.

"Hey guys so I wanted to share a personal part of my life today. I first wanna thank my supporters for all the love I've been shown during the show and after. And not only for myself but for mine and jacks relationship also during and after the show," Analyse began.

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"I am so thankful to have met such a great man like Jack and beyond blessed to have been able to experience and create new memories with one another. We've had so many laughs and have really gotten to know each other since being outside the house."

"However jack and I have both decided that it's best we go our separate ways and remain great friends," she confirmed.

"We've both shared such an amazing experience together that words cannot describe. We've both been through [something] that not many people understand but I wouldn't have wanted to share that experience with anyone else. As a lot of you know we're living in two different states and trying to do long distance has been really hard."

Analyse lives in Simi Valley, CA, while Jack currently resides in Tampa, FL.

"We are also both at two different stages in our lives right now which makes it even harder," Analyse continued in her post.

"I'm so young and still trying to figure out who I am, my goals, and my future. He too is trying to figure out where his path will lead him. He is such a great guy that has been there for me during my ups and downs. And has helped me to mature and grow in many different ways."

"I am glad we were able to be there for one another and will continue to do so because we will always be great friends no matter what."

RELATED LINK: 'SURVIVOR' COUPLES NOW: WHO'S STILL TOGETHER?! WHICH SHOWMANCES SPLIT UP? (PHOTOS) 

Madison Ryann Ward's song "Mirror" played as background music for Analyse's post.

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"I will always have love and a special place in my heart for you Jack Matthews. I hope all our supporters can understand and continue to support us even thought our paths may be different now. Love you all," she concluded.

Following Big Brother's Season 21 finale, both Jack and Analyse were pretty realistic about whether their romance would survive in the real world.

"I'm going to go with the flow and wait and see how it is," Analyse told Entertainment Tonight.

"We haven't really been with each other in kind of a real-world situation, so I don't know what we're both going to be like once we get our phones back and we get other people into our lives."

Analyse added "it might be tough" to make things work given they live on opposite sides of the country.

"But I'm just going to roll with the punches and see what happens," she noted.

As for Jack, he seemed a little more optimistic about the future of his relationship with Analyse at the time.

"She's just a beautiful, spontaneous, fun-loving person. I really have enjoyed my time with her, and I haven't been this happy in a really long time," Jack told ET.

"It's really unique in my life to see that. I can't wait to meet her family, and I can't wait to see what real life is like with her outside of the Big Brother house."

RELATED LINK: 'BIG BROTHER' SHOWMANCES NOW: WHO IS STILL TOGETHER? WHICH COUPLES HAVE SPLIT UP?? (PHOTOS)

Jack was evicted from Big Brother on Day 51 of the game and became the first member of the jury. Analyse got sent to the jury house not long after on Day 65.

Big Brother was ultimately won by Jackson Michie, with Jackson's girlfriend Holly Allen finishing as the runner-up.
About The Author: Elizabeth Kwiatkowski
Elizabeth Kwiatkowski is Associate Editor of Reality TV World and has been covering the reality TV genre for more than a decade.