Callum is very caring deep down, and he can obviously see that George is in a lot of trouble. Because of that, he really wants to help out and make sure that George is okay." Duncan and Roberts visited a Centrepoint service in London to research homelessness, which they both found useful for the storyline. Duncan was glad to be part of a hard-hitting storyline like youth homelessness, especially as the subject was not being tackled elsewhere in the film or television industry at the time. Callum later took George home with him and allowed him to stay with his family, as things were getting dangerous on the streets. When the Kane family prepare to move house, George becomes worried about what that means for him, but Callum was keen for him to stay with his family. Duncan said "Callum keeps trying to talk him round, though, as he's really quite eager to get George away from the streets and into a stable structure again." Duncan also revealed that Callum was aware that George had a crush on him, especially because George would stare intently at him, but Callum was not bothered. Duncan thought the storyline with George had been good for his character, as it showed a more human side to his personality and viewers realised that Callum was not "just an empty shell." Duncan stated that George's homeless storyline was his favourite and praised Roberts. Callum's first love interest was Maddie Morrison (Scarlett Bowman). In an November 2011 interview published in "OK!", Bowman confirmed that Maddie and Callum would grow closer and she branded them "an unlikely couple". The actress said Maddie would really fall for Callum and show her vulnerability at the same time. In the same interview, Duncan said Callum was not desperate for a relationship, due to being introverted, but he becomes "alluring" to the girls. When Callum and Maddie go head-to-head in a college debate, there are "sparks" between them. During a night out, Maddie tries to make Callum jealous by flirting with Joel Dexter (Andrew Still), but when her evening ended badly, Callum came to her rescue and they ended up sharing their first kiss. Duncan thought Callum and Maddie made a good match, despite their different personalities. He told Kilkelly that Maddie brought out Callum's fun side, while Callum tried to help Maddie escape the image she was hiding behind and make her less bitchy. Duncan thought Callum would not be happy if he caught Maddie being rude to people and believed Callum would definitely let Maddie know about his feelings.