Bigg Boss ex-winner Gautam Gulati exposed Simba Nagpal's secret letter
Salman Khan in Bigg Boss 15
Umar Riaz and Simba Nagpal argue with each other
Contestants in Bigg Boss 15 house
Umar abuses Simba
See how Simba is fighting
Simba Nagpal and Umar Riaz fight
Bigg Boss 15 Umar Riaz loses his temper
Simba Nagpal wrote mean comments about the contestants of Bigg Boss house