In series 7, Paddy's marriage to Mimi is near enough over, due to the fact that his affair with Maureen results in the tragic circumstances of the series 6 finale, in which daughter Mandy Maguire (Samantha Siddall) is murdered in an explosion. Separated, living in separate houses and each given the freedom to see other people, Paddy takes a night out with sons Jamie, Shane (Nicky Evans) and Micky (Ciarán Griffiths) as an opportunity to restart his love life with a meaningless one-night stand with a female clubber. When he can't "pull", he returns home, alone and defeated, and is greeted by Kelly. After a short conversation, Paddy hands Kelly an amount of money, in exchange for sex. Kelly accepts this money, and they have sex in the living room, while Kelly's boyfriend and Paddy's son Shane look all over the nightclub for him. Later on in the episode, an awkward Paddy and Kelly exchange moments, in which Paddy offers Shane and Kelly the master bedroom of the Maguire house, out of guilt. Some time later, Kelly rejected Shane's marriage proposal, as she could not marry him after lying to him. Shane insisted he would forgive her anything, no matter whom she had slept with, but the guilty looks between Paddy and Kelly made him realise what had happened between them. Paddy was so ashamed of his actions that he was willing to inject himself with heroin at Shane's request, but Shane stopped him at the last minute. Paddy then attended Shane's and Kelly's wedding.