Thurston and Moynes confirmed their breakup on Instagram Monday, saying the two are "not compatible as life partners."
"It is with mutual love and respect that we have decided to go our separate ways," the former couple said in a joint statement on their respective social media accounts.
"We are so grateful for the moments we shared together and the entire journey that has unfolded this year, but we ultimately have concluded that we are not compatible as life partners, and it is the most caring choice for both of us to move forward independently," they continued. "We ask for kindness and privacy as we both navigate this transition. Both of us will forever want the best for one another and ask you to please support us in our decision."
After the news broke, many Bachelor Nation stars showed their support in the comments sections of the Instagram posts.
Clare Crawley, JoJo Fletcher, Blake Horstmann, Catherine Giudici Lowe, Emily Maynard, Katie Morton and Mearg Tareke all replied to Thurston's post with red heart emojis, while DeAnna Pappas dropped a white heart emoji.
As Ali Fedotowsky Manno said she was "sending" Thurston "love," Sarah Trott and Desiree Hartsock Siegfried offered their own message of support. "Al [sic] my love is with you," Tahzjuan Hawkins wrote.
Eric McCandless/ABC Katie Thurston and Blake Moynes
Andrew Spencer also replied on Moynes' post with a black heart emoji, and Brendan Quinn said he loved the Bachelorette winner. Tyler Smith wished "all the love" to the former couple, as Vanessa Grimaldi said, "Sending you both love."
"Love you guys!" Kelley Flanagan wrote. "Praying for both of y'all."
Thurston, 30, and Moynes, 31, got engaged nearly three months ago during the finale of her Bachelorette season.
"We're opposite in the kinds of movies we like — I like scary, he doesn't," Thurston told PEOPLE following their engagement. "And we talked about our love languages — I'm words of affirmation and he's physical touch, let's be honest!"
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But they agreed on the bigger picture issues, according to Thurston. "We think the same way about the world," she said. "Blake is passionate and funny and I feel so confident in what we have. I'd do it all over again if it meant I'd get to be with him."
Before calling it quits, Thurston and Moynes had been living in different countries. Moynes resided in his native Canada while Thurston — who is from Washington state — moved to San Diego.
In August, Thurston got candid on her Instagram Story about the challenges the couple was facing while maintaining a long-distance relationship.
"I don't think people fully understand what it's like to date someone from another country and the rules behind that and the visas behind that," Thurston, 30, said in the expired video. "I think right now, Blake can only be here for 60 days before having to go back to Canada, so we really do have a lot we have to look into — and we just haven't yet — before we can plan really anything else."