Even Kellan Lutz is unsure what the deal is with his “complex” Twilight saga co-stars Robert Pattinson and Kristen Stewart – or so he claims.

"They're just so complex, and I like to laugh and smile," he says, adding, "I don't know what's going on. I have no idea. I don't hang out with Rob or Kristen."

But that's not to say he doesn't appreciate more simple things about the allegedly loved-up couple, such as their (and his own) beauty.

He continues to E! News: "They are attractive humans, yes they are. I'm nice with Rob also. I look great with him too. I think I look better with Rob...Rob's awesome. I love him to death."

Kellan also feels for Rob's 'prisoner of the paparazzi' status.

He says of the Eclipse shoot: "It's going great. We all love Vancouver. It's just that there's just so many paparazzi everywhere.

"We've been moving around to new places like every two weeks. Especially for Rob - we feel bad for him. Like, we go out to cast dinners and, whenever Rob's shooting, that's when we can have free time because usually that's when everyone is trying to shoot Rob or Kristen.

"So then we can actually be free to walk around the city and shop and go out to eat. You know, when we want to do cast dinners, it's tough because you can't just chill."

Then Kellan went back to his favourite non-complex pastime of laughing and smiling, while admiring his impressive biceps. Probably.

Twilight at Teen Choice Awards