In May 2005, the Millers return to their former home in a block of flats whilst a rat problem in the square is being dealt with. Demi is reluctant, as it means she is likely to see Leo. Soon after their arrival, Demi takes Aleesha for a walk and sees Leo. They realise their split has been due to their parents meddling and denying contact between the two, and they reunite. Demi tells Leo that it is Aleesha's christening the following day. Despite appearing reluctant, Leo and his mother Trisha (Cathy Murphy) attend the christening, however the service is interrupted by Ray, who viciously drags his wife and son away. Demi and Leo meet later that evening from their balconies. As the feud between the Millers and the Taylors escalate, Leo plans to run away, and begs Demi to come with him. Demi agrees, but Leo abandons her when she insists on taking Aleesha. Demi returns to Walford, but is delighted when she meets Leo near the swings. Leo promises her he will secretly continue to see her.