The wedding ceremonies are done and the marriages on the verge of being consummated as the three couples in "Married at First Sight" season 4 jet off on their honeymoons. But for one pair, the trip might just turn out to be a complete fiasco.

The previous episode saw all three couples spending their first night together just getting to know each other. While Lillian and Tom were already quite affectionate, Heather and Derek and Sonia and Nick were more reserved and cautious. But of the two pairs, Heather and Derek's awkwardness toward each other was more palpable.

Episode 4 will see the three couples jetting off to their honeymoon destination. But while Tom and Lillian take their relationship to a whole new level, Sonia misconstrues Nick's intentions. Meanwhile, Heather's pet peeve about Derek boils to the surface.

A trailer for the upcoming episode, "Honeymoons, Pt 1," begins with a shot of Tom and Lillian in bed. It appears the pair might have finally consummated their marriage. Fans won't be surprised by this as the two had kissed several times already. Tom even revealed to cameras that there's already so much sexual tension between him and his bride. Tom is later seen trying to teach Lillian how to surf and it appears they're getting along well.

Sonia and Nick's marriage also looks like it has gotten off to a good start. The two look more comfortable with each other and Sonia even acknowledges that the experts "did a real good job matching us."

However, Derek and Heather's relationship seems to have gotten off on the wrong foot. The two are seen on loungers at the beach as Heather tells her husband that she's "so turned off right now." Derek is later seen angrily walking away. He later admits on camera that it's only the second day of their honeymoon, but he thinks they're in a lot of trouble already.

It's not clear what has had his bride turned off, but the past episode did reveal that Heather wasn't too happy with the revelation that Derek smokes. While Derek is said to be an occasional smoker, it might be a bigger deal breaker than he or Heather expected.

As a matter of fact, there have been reports that the honeymoon would be a contentious one and that the two will decide to divorce even before Decision Day arrives.

Episode 4 of "Married at First Sight" season 4 will be aired on Aug. 16.