The 24-year-old actor – who is in a relationship with his 'Twilight Saga' co-star Kristen Stewart – insists starring with older leading ladies in Reese Witherspoon and Uma Thurman in 'Water for Elephants' and 'Bel Ami' did not bother him as it was so similar to his own life.
He said: "Every girl I went out with in my teens was older than me. My first girlfriend was 26, I was 17.
"Women who were older always seemed more exciting."
The British hunk admits one of the attractions of dating older women was how much it irritated other people.
He explained: "I used to think I was a bit of a bad-ass when I was younger. I liked that it annoyed people how much younger I was.
"I liked walking into a room with a woman and people looking at us and thinking, 'They do not look right together.' "
Nowadays, Robert is more cautious with his personal life as he knows any outrageous antics will shunt him further into the spotlight.
He told Britain's Elle magazine: "It isn't possible to get away with stuff with camera phones around. I can't do it.
"If I have four beers, I'm destroyed the entire next day. I don't understand how these stars used to go on benders all the time."
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