In late 2005, Jason began dating Sarah Platt portrayed by Tina O'Brien, they had an on off relationship and were due to marry in 2006. Speaking of the storyline Thomas said: "Jason was thinking about getting married in four years rather than four months. It was just a gesture, and that’s all he wanted it to be. He thought they would just get engaged and they didn’t have to get married for ages yet. It was more of a stepping stone for him. It has come round quickly for Jason, and he is sort of being pushed into it. He doesn’t want to lose Sarah so he is going along with it because he does actually love her." Asked if Jason would settle down Thomas also said: "He's had a bit of a past and he's a bit of a Jack The Lad around Charlie but on this occasion, for once, he's actually showing some grown-up qualities and, when faced with the prospect of losing Sarah, he chose to bite the bullet. There's no grey area with Jason because there's not that much grey matter! Everything's in black and white. It's either marry Sarah and keep her or don't marry Sarah and lose her forever." Speaking about if Jason will also be able to handle Bethany, Thomas said: "He certainly will – he pulls her to one side during the ceremony and makes her a pledge. He realises he can't have Sarah without Beth – they come as a package." The storyline resulted in Jason leaving Sarah and also resulted in Sarah leaving the street for a new life abroad with Beth. leaving Jason alone and upset.