A 40-year-old scrap dealer, Harish Sharma, was allegedly stabbed to death by his 27-year-old live-in partner Yashmeet Kaur in Gurugram's DLF Phase-3 area after an argument over him talking to his wife, police said. Sharma, who was already married and had two daughters, was in a relationship with the accused for over a year. Kaur has been arrested.