The 25-year-old actor - who is in a relationship with his `Twilight Saga` co-star Kristen Stewart - said he would be willing to lose his own life in order to protect those who mean the most to him.
He explained to Danmark Berlingske TV: "I think if you love anyone, you kind of feel like that. If you`re in love with anyone, I think the majority of people would say, `If I have to die for this person, I will.` I mean, you don`t really love someone if you`re like, `No. Just let them die.`"
Robert has previously claimed he is old fashioned when it comes to love and says he can relate to his vampire alter-ego Edward Cullen over his opinions about marriage and romance.
Talking about Edward - who weds Bella Swann (Kristen) in new movie `Twilight Saga: Breaking Dawn - Part 1` - Robert said: "I guess I must be because everyone is always telling me that Edward is kind of old-fashioned, but I always see him as fairly normal. I mean, he just knows what he wants. He`s in love with someone and he just likes the idea of getting married to them. I guess I kind of agree with that."