Alfie shares a mutual connection with Kat's sister, Little Mo Mitchell (Kacey Ainsworth), whose marriage to Billy Mitchell (Perry Fenwick) has collapsed. Alfie helps Little Mo bring up her baby, Freddie, and they decide to announce that they are an item. However, Kat returns before they have a chance, and she makes it clear that she wants Alfie back. He is torn between the two sisters, eventually choosing Kat. He lets Little Mo down gently, and they share a final goodbye hug, which Billy assumes is them getting together. In the pub, Billy drunkenly announces that Alfie and Little Mo are an item. Kat is furious and decides not to get together with Alfie, so as not to break her sister's heart. However, Alfie and Kat continue to grow closer, due to Kat's relationship with Alfie's grandmother, who is dying. After Kat helps Alfie complete some of Nana's final wishes and overcome her death, they long for each other. Alfie announces that he is leaving to drive across the United States in a Ford Capri, and it seems he has gone for good when he waves goodbye to a heartbroken Kat on Christmas Day 2005. After getting drunk and drowning her sorrows in the pub, Kat is stunned to see Alfie waiting for her outside. Kat and Alfie then get into the car together and drive off.