Just like any other couple, Ian Somerhalder and Nikki Reed confessed that they argue sometimes. Unlike any other couple, they argue only about the color of the "Vampire Diaries" actor's eyes.

Nikki Reed talked to reporters during the 3rd annual Noble Awards Friday in Beverly Hills, California and she said that her fiancé thinks his eyes are "ocean blue." It was during the red carpet event that she showcased her flower-shaped engagement ring.

"I think they're aqua," she joked according to People.

But really, Ian Somerhalder and fiancée Nikki Reed get along so well that they don't argue about anything, at all!

"[Nothing] really. I know it sounds stupid," he said.

That's because they have the same outlook in life, and that's to use their fame and fortune as a platform to make the world a better place.

"We do wake up in the morning and talk about those things," Nikki Reed said. "That's the revelation that I've had in the last couple of years is understanding my role in this, and that one individual can actually do something, can change the world."

"I think it all stems around the idea that everything is connected," she said. "And so what's actually I think nurtured this long friendship that we've had is that we are passionate about similar things."

According to E! News, the couple showed how much they mean to each other during the Noble Awards.

"The two cuddled and stared lovingly into each other's eyes as they arrived at the event, where the 'Twilight' actress and several other celebrities were honored for their humanitarian work," it said.

"At the Noble Awards, the Twilight actress was honored for her work with the Wildlife Waystation, a non-profit animal sanctuary, and the Ian Somerhalder Foundation."

"Vampire Diaries" actor Ian Somerhalder and Nikki Reed have not released any statement on their engagement, but E! confirmed in January this year that he already proposed to her.

"They were crazy happy from the start. Their families love each other. It just feels really right," the source said.