 Fatboy gets a month 's trial on the market with his own stall , starting a repair business . He reveals that his father , Ashley Chubb ( Colin Mace ) , has lost his job and his parents have split up . Ashley arrives in Walford , asking for his son 's help , as he has spent Fatboy 's inheritance on alcohol . Ashley then moves into Albert Square . Fatboy grows jealous when he sees Mercy with Seb Parker ( Tommy Bastow ) , and assumes they are having sex . Mercy reveals she may face exportation as her visa has expired , and Fatboy tells Ashley he is in love with Mercy . Ashley reports Mercy to the UK Border Agency so that Fatboy will forget about her , and she decides to leave before she has been asked to . Fatboy and Mercy say an emotional goodbye , but Fatboy stops her taxi and proposes marriage , realising she can stay in the country if they are married . Mercy agrees but Grace is opposed to the plan until she realises that Fatboy loves Mercy . Kim points out that Fatboy seems embarrassed about getting married and that Mercy does not seem to love him , and admits to fancying Fatboy . Fatboy then tells Kim why he is really marrying Mercy , but also that he wants to be married for real . 
