Big Brother alum Holly Allen and The Bachelorette alum Blake Horstmann have sparked dating rumors after they were just spotted hanging out together and having fun.

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Holly, who finished as the runner-up on Big Brother's 21st season and just announced her split from Jackson Michie last week, enjoyed a night out with Blake, who found fame when he competed on The Bachelorette's fourteenth season.

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

Holly, 32, and Blake, 31, spent time together on Wednesday, according to Us Weekly.

"ICED," Holly captioned a video of Blake being served a Smirnoff Ice on her Instagram Stories.

Blake reportedly re-posted the video clip and wrote, "Wednesdays," along with an emoticon of ” and a facepalm emoji.

However, a source Us that Holly and Blake's relationship is not romantic.

"Blake actually knew Holly before she went on Big Brother," the source said.

"They have mutual friends in Denver and were just out with friends catching up."

Holly and Jackson, who fell in love on Big Brother last season, just announced their split on Thursday, June 18.

"A year ago I started a wild new adventure. Today, I start another adventure. Growth is sometimes hard, but necessary. Growth sometimes happens alone. And that's what I'll be doing," Holly captioned a picture of her looking happy and free.

"Yes, I've had the opportunity to meet a person to conquer life with for a while. Yes, I had an amazing partner in that game I played. And I wouldn't change the experiences for the world. But some things are not meant to go beyond that."

RELATED LINK: 'THE AMAZING RACE' COUPLES NOW: WHO IS STILL TOGETHER? WHO HAS SPLIT? WHERE ARE THEY NOW? (PHOTOS)

Holly hinted at the reason for her split from Jackson and wrote, "Sometimes fundamental character traits simply don't line up. Priorities don't match. And that's ok."

"This past year has been the hardest to date and has taught me about sense of self, security in who I am, and what I want for my future. I know I cannot compromise my own integrity," she continued.

"I know that I'm proud of myself, my accomplishments, and my roots. I know the spirit and the inspiration that I look for in people I surround myself with. I know what I deserve. And I'm excited for this new chapter and where it will lead me."

Holly, however, admitted she's "hurting" right now.

"But hey, pain is only temporary. Thank you all for going through the ups and downs with me! And please. I know we've been forced to go through this publicly, but we are human. We hurt and we bleed. Please try to spare the criticism," she added.

Rumors sparked there was trouble in paradise when Jackson noticeably spent his 25th birthday with his Big Brother buddy Brett Robinson at Encore Beach Club in Las Vegas on Saturday, June 13 instead of with Holly.

Holly did not even wish Jackson a happy birthday on social media, according to the magazine.

Although Us reported Holly and Blake are just friends, Holly was previously linked to another man in Bachelor Nation, Luke Pell from JoJo Fletcher's season of The Bachelorette.

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

Luke and Holly -- who is from Wyoming but moved to Los Angeles, CA, in January -- reportedly dated on and off from 2017 to 2018.

As for Blake, he finished as the runner-up on Becca Kufrin's season of The Bachelorette in 2018. Becca gave her final rose to Garrett Yrigoyen instead, and he in turn proposed marriage.

Blake bawled his eyes out once Becca let him go, and he said he was dreading going through subsequent months alone and brokenhearted.

When Blake wasn't chosen as The Bachelor's Season 23 star for 2019, he tested his luck at finding love on Bachelor in Paradise's sixth season last summer but was ripped apart for his actions in between his two appearances on the shows.

Blake was condemned for having sex with Kristina Schulman the night before he flirted with Tayshia Adams and then slept with Caelynn Miller-Keyes at the Stagecoach festival in April 2019.

Caelynn claimed she had an exclusive relationship with Blake for a few months and he had "ghosted" and really hurt her, but Blake subsequently released a handful of text messages that showed Caelynn allegedly saying she wanted "sex, only sex" from him at the music festival -- while Blake was pleading with her just to cuddle instead.

Blake later apologized for throwing Caelynn under the bus and has seemingly been single ever since his stint on Bachelor in Paradise, although it's assumed he's been dating.

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

Reports have swirled Big Brother's upcoming 22nd season will feature a cast of returning players or all-stars. Since the show is approaching its 20th anniversary on the air, producers are reportedly looking to do something big.

"CBS was originally aiming for July 15 premiere, but now it's set for July 22," a source recently told Us. "It could be pushed back even further due to COVID-19."