Following a brief fling with Roxy Mitchell (Rita Simons), Jase begins a more serious relationship with Dawn Swann (Kara Tointon), whom he later proposes to. He unknowingly begins working for May Wright (Amanda Drew), the woman who had planned to adopt Dawn's daughter, Summer. A violent confrontation occurs when May tries again to abscond with Summer and causes a gas explosion in Dawn's house; Jase saves Summer's life, catching her when she is dropped from a first floor window. With their house burnt down and no money, Dawn begins to fret over their financial future. Wanting to please Dawn, Jase takes a mysterious call saying he will do "one more job for him." The next day Jase brings home a bag full of money. Dawn then spends the money on various things including clothes and rent money for a new flat. Jase adopts Summer and his name is added to her birth certificate, after Dawn had left it blank when Summer was born. Dawn's demands continue, so Jase does more jobs for his associate. When he comes home beaten and bloodied, he is forced to admit to Dawn that he is working for Terry Bates once again. Dawn is initially furious, but despite realising that he is involved in criminal activity, she makes no attempt to stop him as she is desperate to keep the money and get the wedding of her dreams. Jase speaks of leaving Walford to escape Terry, but Dawn announces that they have set a date for their wedding, ensuring that Jase cannot leave.