Mugdha, 27, said they are just friends and on-screen partners on the stunt reality show.
She and Ranvir, who is married to actress Konkona Sen Sharma, will be seen together in 'Fear Factor-Khatron Ke Khiladi' and during the shooting of the show both the actors were called by other contestants as 'Ramu'.
"This teasing was just for fun, as we use to tease other contestants too. Ranvir is a very funny guy, he kept us entertaining throughout this show. We were terrified with the stunts and his humour helped all of us to release that tension. You can call him my on-screen partner nothing more than that," Mugdha told PTI.
Asked about her biggest competitor on the show she said, "Everyone use to surprise us every time with new stunts and dare. Everybody was a surprise package."
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The 'Fashion' actress feels Rohit is strict but a relaxed task master.
"I have worked with him before and he is very balanced person. He is strict but a relax personality at the same time," she said.
Having started her career in films, Mugdha has been seen off late on TV. She also judged a Marathi reality show.
"I used to watch the other versions of this stunt show when I was a kid and was always so fascinated that I always wanted to be a part of it someday," she added.