The 39-year-old sheep and cattle farmer, from Longwood Victoria, took to his Instagram account to post a cryptic meme, just hours after Hayley uploaded a photo of her baby scan.
"A wolf does not concern himself with the opinions of sheep," the meme read.
Meanwhile, Hayley took to her own account to say: "I am in shock with the amount of support myself and bubs have received. I was absolutely terrified to come out with a statement as I am struggling with my mental health... although I did have the support of a pretty intelligent, amazing woman (you know who you are), my family and close friends too.
"Whilst the rumours were spreading I became a complete wreck. I removed myself from social media to recover from all the awful comments I was reading about myself and even the other girls [and] farmers.
"I am going to let the dust settle over the next few days but just wanted to jump on quickly to say a massive thank you. My heart is so full and I know bubs is going to have so much love."
It comes after Hayley released a statement to news.com.au, saying she is 22 weeks pregnant with Will's child.
Hayley, who was originally vying for Farmer Matt Trewin’s love on the show, alleged she began a relationship with Farmer Will in December, after the show was filmed but ahead of filming for the reunion episode.
The reunion episode is due to air on Channel Seven on August 11th, with the network claiming it will be an “unmissable” episode.
Farmer Will picked 32-year-old nurse Jaimee at the end of the season, saying she had made him smile and laugh every day and admitted he was “falling” for her, confessing: “I’ve done some soul searching and all my advice was ‘go with your gut’. I’ve decided I choose you if you’ll have me?"
Meanwhile, Farmer Matt let Hayley go earlier in the finale week, ending up with 25-year-old executive assistant Tara at the end.
“I am 22 weeks pregnant with Farmer Will’s child,” Hayley told news.com.au in a statement.
Hayley claimed that when she and Farmer Will got together he told her “he wasn’t with Jaimee” anymore, although it’s believed Will and Jaimee will appear together on the reunion episode.
“You must remember we went on this television show to find love. I thought I could have that with him,” Hayley said.
The 25-year-old personal assistant from Victoria said she decided to end things with Will after a woman confessed her feelings for the Farmer in a message to her on Instagram.
“On the 2nd April I left his house thinking, ‘I’m never coming back, I’m done.’ The next morning I found out I was 6 weeks pregnant. I was terrified to tell him,” she said.
Hayley said she has come forward to “tell her truth” after rumours of the alleged pregnancy began swirling online.
Earlier this week, Kidspot reported that "multiple reliable sources" had revealed a pregnancy bombshell on this season of Farmer Wants a Wife.
It's not the first controversy to rock this year's season of the series, which in the past has claimed to be Australia's most successful reality show, with nine marriages and 20 kids across the seasons.
Yahoo Lifestyle has contacted Farmer Will and Channel Seven for comment.
Farmer Sam hits back at 'rumours'
Two weeks ago, Farmer Sam spoke out following accusations that his farm wasn't actually his own, that he had a 'secret' second job and a 'secret girlfriend'.
"I want to address the criticism and rumours that are currently circulating regarding my time spent on @farmeraustralia and my life outside of the show," he wrote in a lengthy Instagram post.
"The farm you see in the show is a family farm. I have a partnership with my brother and I never once claimed that it is explicitly mine. I would hate to take that away from my brother."
Sam denied he'd kept his second job — truck driving — a secret, and added that he found it difficult to fit in his 'work and life commitments' on non-filming days.
"I'm just like every other person out there - sometimes two incomes are needed to pay the bills. I drive trucks as a second income and that's never been a secret.
"Life is still going on while filming is happening. On the few days we had off, I still had to attend to work and life commitments and it was pretty challenging."
He revealed that his mum was experiencing a health battle in private during his time on that show that made some days very hard.
"My mum's health has been a recent issue and this was something I had trouble processing, so some days, like every human, I’d have a hard time. I didn’t want to have to talk about this out of respect to my mum's privacy, but I feel I need to address this to be completely transparent."
Finally, Sam refuted rumours that he was seeing another woman while romancing contestants on Farmer Wants A Wife, saying that that behaviour is 'not in his nature'.
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