Tejasswi Prakash won the 15th season of Bigg Boss on Sunday. Pratik Sehajpal, who was the first runner-up of the show, shared a picture with show host Salman Khan and wrote, “Thank you for all the love and support and also the T-shirt Bhai. Rakhi Sawant reacted to the picture and wrote, “Waah.” Pratik's close friend and Bigg Boss 15's …