'Married at First Sight' season 4 recap and news: Trouble brewing in paradise

The couples of FYI Network's reality television series "Married at First Sight" have now known each other for five days. The three couples are still getting to know each other, but in the process, they might find problems that can potentially lead to a divorce.
To recap the previous episodes, it was pretty clear that Tom and Lillian's relationship has been going well despite knowing each other for only a brief amount of time.
Among the three couples in the show, they were the first to consummate their marriage on the first night of their honeymoon.
Though the couple is still learning about each other, it seems like Tom is deliberately refusing to admit to his new wife that he lives in a tour bus. Tom even expressed his disdain for people with new cars. Lillian, who works as a real estate agent and owns a nice car, was somewhat offended by the comment.
Tom got away with his offhand remark by saying that he meant other people and not her specifically. The excuse worked.
On the other hand, Nick and Sonia have yet to consummate their marriage. The couple tried to get to know more about each other when they went paddleboarding and horseback riding together. But when Sonia told her husband that she liked him, his response was that he preferred the slow and steady progress of their relationship.
Sonia got a little annoyed. She decided to have some alone time which managed to calm her down. The couple decided to move past this little argument.
Among the couples, Derek and Heather's relationship seems to be the one that is bound to end soon. Heather was repulsed by Derek's smoking habit while Derek thought from the start, his new wife has been judgmental. He even pointed out that Heather has been drinking more than he has been smoking. This led to another argument between the two.
Many believe that Heather and Derek will be the first to end their relationship. Fans of "Married at First Sight" watch the couples on Tuesdays at 8:45 p.m. EDT on FYI.