According to Us Weekly, the actress said that she found it "hard" to film the intimate scenes with Lautner.
She said that the scenes felt like they were "so against everything that Bella's always been".
Stewart said: "Taylor [and I] have so much fun with this stuff because our intimate moments are so few and far between - and weird."
"Me and Rob [Pattinson] are always so serious because we have [a lot of] those scenes."
Speaking about filming the movie, she said: "Bella always wanted Jacob and Edward to level with each other finally, and it's funny that it takes place while she's sleeping between them."
"It was fun to shoot, but I wish it wasn't as hot. I was literally in a beanie and I was just sweating."
'The Twilight Saga: Eclipse' is due for release on 9 July.
Subject: Twilight star talks about kissing Lautner 
Mon Jun 14, 2010 12:19 pm