The problem with Sumbul is she doesn't have self respect. Running after a person even if it's for emotional support make her look like desperate especially when the same man was agreeing with all the mocking which Tina was doing of Sumbul behind her back. It's also not like that she hasn't options. If she isn't getting respect in her group, she can try talking to others like others are doing. Sumbul has made in her mind that people don't like her. It's all in her head. There is Archana who is being ridiculed by everyone in the house but she doesn't give a damn. She takes stand for herself and entertains. No one wants to see a sad face 24*7. She needs to be more cheerful and open up. She was the most popular and this was also an advantage for her, she could have not been in any group and played on her own. Despite having so much popularity, her running after less popular ones like Shalin and losing her individuality is nothing but stupidity and shows her inner weakness who is constantly depending and finding company to stay. She is also lucky that Salman, Shekhar, BB audience and now Gautam told her to play alone. Even after these hints, she doesn't leave Shalin, then I don't know what to say. 😆