“Outlander” Season 1 will return in April to explore Jamie and Claire’s marriage, but they aren’t exactly living out a fairytale. In a new video from Starz, Sam Heughan (Jamie) and Caitriona Balfe (Claire) hint at hard times for the couple.

“They begin to know more about each other and ultimately their relationship is quite strongly tested,” Heughan explains.

A clip shows Jamie as he says to his wife, “You’re tearing my guts out, Claire.” There is plenty that Jamie doesn’t know about his wife yet that could evoke such a strong reaction — like her entire past. He might find out that Claire is a time traveler sooner rather than later. That would certainly put their relationship to the test, especially if Jamie finds out his wife is married to another man (of course, fans of Diana Gabaldon's books already know when that will happen).

However, they’ll face other problems more immediately. Claire and Jamie have plenty of enemies that can test their relationship. As previously reported, Black Jack Randall (Tobias Menzies) will still be after Jamie. The Scottish man will manage to save his wife from the redcoat, who had her captured in the midseason finale, but Jamie won’t be able to get rid of him for good. 

“You know, it’s not like there’s a happily ever after right away,” Balfe reminds audiences.

Watch the “Outlander” behind-the-scenes video below:

“Outlander” Season 1 returns to Starz on Saturday, April 4 at 9 p.m. EDT.