Katie later tells Chas that she felt in the way as Andy had enough problems involving his ex-girlfriend Debbie Dingle (Charley Webb) and their children. Adam Barton (Adam Thomas), Andy's housemate, then invites Katie to move back in with him and Andy. They begin flirting and when Declan enters the pub and sees them together, he calls them pathetic when they toast to being "young, free and single." They go home, late and drunk, but Adam sleeps on the sofa. In the morning, they continue their flirting until Adam leaves and Andy warns Katie, telling her to tell Adam they are just friends as he had just come out of a relationship with Victoria. Katie later runs into Declan who tells her that he believes she will learn to forgive him. After meeting Adam at the pub again, they continue to flirt. They later left the pub together and return home. Katie calls Declan and tells him to come to Andy's so that they can talk. Declan walks in on Katie and Adam, having sex on the sofa. Katie reveals that she had set it up to prove to Declan that they were finished and that there was no future for them. Adam is angry with Katie for using him to hurt Declan.