Three men were arrested on Friday for robbing a man in his house in southwest Delhi's Sarojini Nagar area, police said. One of the men, who had previously served time in prison, planned the robbery to please his girlfriend with expensive gifts as she was upset with him. The accused have been identified as Shubham (20), a resident of R K Puram, Asif (19), a resident of Nizamuddin, and Mohammad Shariful Mulla (41), a resident of Jamia Nagar.