Jim Carrey doesn't care about negative reactions to 'I Love You Phillip Morris'.

The movie tells the true life story of Steven Russell - played by Carrey - a married man who comes out as gay and completely changes his lifestyle, eventually landing him in a prison due to a series of cons.

He said: "I don't really care about the reaction, if there's a negative reaction. I care about doing a story about amazing, fascinating people.

"It's a true story about love, and someone's relentlessness to find it and keep it."

Jim - who stars in the comedy movie opposite Ewan McGregor as his love interest Phillip Morris - also admitted he wanted to do role because it was a rare script for him.

He said: "A lot of times, especially with bigger comedies, when you get a script you generally have to go out and sit in a boiler room and turn yourself into something.

"There are very few scripts that come through where I feel like I don't have to do that, the character's already realised - but this was one of them."

However, filming was not made easy thanks to a dark scene where Jim's character Steven loses weight when he is faking AIDS.

He told the Metro newspaper: "The process of losing weight was pretty tough.

"In the week of shooting, I was just having these little tomato drinks and supplements so I could stay alive.

"In the last two days before the main shots where I look very skinny, I actually just stopped eating.

I was completely exhausted and raw during that part of it."

'I Love You Phillip Morris' is released in the UK on March 17, but only has a limited run in the US from April 30.