Vin Diesel and Paul Walker first co-starred together as Dominic Toretto and Brian O'Connor in 2001's 'The Fast and the Furious.' In these breakout roles, the actor's started one of the most successful film franchises in history.

Vin Diesel
Diesel talked about the effect of Walker's death last November

Over the past decade the duo have featured in five of the seven movies together, including 'Fast & Furious 7' which is set for release in April of 2015. But half way through filming the latest instalment, tragedy struck as Walker was killed in a car crash last November (2013).

More: Paul Walker's Brother Gets Emotional While Speaking Of Actor's Death

Unsurprisingly, this fatal accident shocked the acting world, especially the cast and crew of the 'Fast and Furious' franchise, including Diesel. In a recent interview on 'Live with Kelly and Michael,' the 47 year-old actor opened up about the effect Walker's death had on him and how it greatly affected his career, to the extent that Diesel could barely talk about the subject.

"And they're both looking at me right now like, is this going to be too much for him?" Diesel said firstly. "Because it could be. We could change the tone of the whole show real quick."

More: Film Franchises That Go On Forever

"It's a heavy thing, Michael. You know?" he continued. "I grew up in the bouncer world, and we lost people while we were bouncing. But the brotherhood in Paul Walker was something completely different. It was someone that we. we grew up in the business together, and we became famous together, and we represented the biggest franchise together. He was my partner, and it's a strange thing to. I've been acting all my life and they don't teach you in acting, how to mourn someone and simultaneously pretend they're in a scene with you."

Paul Walker
Walker died aged 40

The 'Riddick' actor is referring to the studio's decision not kill O'Connor off but 'retire' him in the 7th instalment, therefore they also finished the late star's remaining scenes with the use of stunt doubles and CGI.

"It's one of the darker moments in this, in my journey. Yeah. Yeah guys, you know it's a rough one. You all had people you love that passed away," Vin concluded.