Robert Pattinson is a compulsive eater.

The 'Twilight' heartthrob - who is currently dating his co-star Kristen Stewart- revealed he doesn't understand why people find him attractive because he is addicted to M&Ms and thinks he will be hugely fat when he gets older.

He said: "I'm, like, a compulsive eater. I'm going to be so fat when I'm older, it's ridiculous."

Although Robert claims he is extremely boring he admitted he is a fan of troubled actor Charlie Sheen - who was recently admitted to hospital following a 36-hour drink and drugs binge with a bevy of porn stars - saying he admired the actor's "little escapades".

He added to Vanity Fair magazine: "I like crazy people who don't give a f**k. I've just kind of stopped doing everything. I never change the channel in my trailer. I just watch reruns of 'House of Payne' and 'Two and a Half Men'. God, I sound like such a loser."

While Robert was coy about his relationship with Kristen - who plays Bella Swan to his vampire Edward Cullen in the 'Twilight' series - he revealed he admired her long before the pair first met.

He explained: "Kristen is very focused on being an actress. I mean, that's what she is-she's an actress. Whereas I-I just don't really know.

"She's cool. Even before I knew her I thought she was a really good actress. Like, I saw 'Into the Wild', and I thought she was really good in that. I still think there are very few girls in her class that are as good as she is."