Siddhant Chaturvedi, who'll share screen space with Ishaan Khatter in the upcoming horror-comedy film 'Phone Bhoot', has said there's no rivalry between him and Ishaan. "He's like my brother," he added. "There's competition, but it's very healthy. If he knows something, he'll help me with it and vice versa. The relationship we share comprises friendship and brotherhood," Siddhant further said.