Viewers saw Nick betray half-brother David by sleeping with his wife earlier this week, and although he and Kylie regretted their antics the next morning, the pair's passionate encounter comes back to haunt them in early 2013.
Kylie is left in turmoil when she realises that she is expecting a baby, as she has no idea whether the father is David or Nick.
Ben Price, who plays Nick, told Inside Soap: "Of course Nick's one-night stand with Kylie will come back to haunt him. There's just no way something like that can be hidden on the Street.
"If I was Nick's mate, I'd tell him not to dig any more holes for himself and leave Weatherfield for good. But I don't want to do myself out of a job!"
Meanwhile, Paula Lane - who plays Kylie - told Radio Times of the pregnancy: "This could blow the whole Platt family apart. No matter what option they go down, there are risks involved. So it's just trying to work out which isn't going to hurt so many people.
"Kylie's got more to lose than Nick, but he doesn't see it like that. It's his family. So Kylie wants to come clean but Nick doesn't. He says an abortion is the only thing that works for all of them, but Kylie's not sure it works for her."
In a further twist to the tale, reports have confirmed that an enemy will discover that David may not be the father of Kylie's baby as the storyline progresses. This development takes place in a few weeks' time, adding even more pressure to Kylie's situation.
Coronation Street continues tonight (December 28) at 7.30pm on ITV1.