It is known from the marriage of Declan and Stephanie that a child named Willow was born. Declan actually had suspicions for a long time because his father, who had recently divorced, suddenly moved and chose to live in the same house with them. Declan's suspicion grew when he observed his father's behavior through a baby monitor that could be accessed through his phone. He found that his father often spent a considerable amount of time with Stephanie in the room.

"Painful, how could my father do that to me? Like a plot from EastEnders. It's not normal," said Declan quoted by Dream from Mirror UK. Meanwhile, Stephanie did not admit that she was cheating with her own father-in-law. "I didn't cheat on Declan. We were together for about a week after he left me," said Stephanie.

After getting married, Stephanie and Derren have a child, this news also reached Declan's ears. He feels sorry for Stephanie and Derren's children because he judges their family as messy. "I feel sorry for their babies, they come from a messy family," Declan said.