Justin Timberlake couldn’t have looked happier announcing his wife Jessica Biel's pregnancy on Instagram last week, but according to a new report, the singer’s marriage to the “Total Recall" star may not be as solid as it appears. Ahead of the birth of their first child this spring, the couple was spotted vacationing in Montana last month. Rumor has it, though, that their romantic babymoon didn't go so smoothly.

After a day of hitting the slopes together, an eyewitness claims to have picked up on a noticeable strain between the A-listers when they sat down for a meal. “There seemed to be some tension between them,” an insider revealed, according to a report from Radar Online. “They were not talking at all. Justin was on his phone the entire time, looking down.”

Does that mean there is trouble in paradise for Timberlake and Biel? Despite Radar Online noting that the couple acted like "strangers" during their outing and suggesting that their marriage is “heading downhill,” let’s hope for the sake of their unborn child that it’s not.

The couple is due to welcome their first child together in just a few short months. After weeks of speculation that Biel, 32, was with child, Timberlake, 34, confirmed his wife was expecting on social media Jan. 30. “Thank you EVERYONE for the Bday wishes! This year, I’m getting the GREATEST GIFT EVER. CAN’T WAIT,” he posted to Instagram. His announcement, which was accompanied by a photo of himself kissing his wife’s baby bump, also teased the child’s gender. “#BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets,” he wrote.

Despite Timberlake's joyful words in the post, rumors of turbulence in his union with Biel have been circulating since they first wed in 2012. Most recently, Timberlake was accused of cheating on his acting belle by stepping out with his 20/20 tour backup singer, Zenya Bashford.

Star Magazine reported that the “Suit & Tie” singer was spotted acting “more than friendly” with Bashford during a September 2014 club outing following a concert appearance in Paris. “They were dancing in a way that no married man should ever dance with someone who isn’t his wife,” an eyewitness told the magazine. Contradictory to reports that Timberlake was "rubbing and caressing" Bashford, photos of his outing only showed him hugging the dancer.

While accusations regarding Timberlake’s alleged infidelity have encompassed a majority of the rumors surrounding his marriage to Biel, the duo was also previously speculated to be feuding over their plans to start a family. In January 2014, OK! Magazine reported that Biel was fed up with Timberlake’s alleged reluctance to have a baby.

“Before they wed, Justin promised Jessica they’d try for a baby but then he decided to put his energy into touring instead,” said a source. The report went on to claim that the pair was headed for a split and “already living apart.”