A young boy cried “Mummy, I’m scared” as they hid from her knife-wielding boyfriend as he chillingly warned: “I’m going to get you!” The pair cowered in dark alleyways and behind cars after bare-chested Joshua Bruton chased them out into the street from her home in Deal. The 25-year-old thug from Cliftonville had turned up drunk at about midnight and accused his then partner of cheating, before attacking her and threatening to “knock her out”. She fled with her young son as Bruton – who once stabbed a teenager – followed her into the road outside, topless and brandishing a knife. Details of th…