Vampire hottie Robert Pattinson has admitted that co-star Kristen Stewart's brutal honesty makes him uneasy at times, reports contactmusic.com.

Rob's rumoured girlfriend is not afraid to speak her mind, which in turn has led to awkward situations when Rob is unable to voice his opinions.

He said: "Kristen is always really good but also clearly speaks her mind. That can be a bit uncomfortable. After we shoot a scene she sometimes looks at the director and says, 'Let's do that again. If I did that she would probably kill me! She would probably say something like, 'Shut up! The scene was perfect!' "

Yup. That's love right there. Sweet!