Rumer Willis: 'Ashton Kutcher and Bruce Willis Friendship Isn't Weird'

Rumer Willis insists it's not "weird" her step-father Ashton Kutcher is best pals with her biological father Bruce Willis.

"We all have so much fun together. I'm so lucky," the 19-year-old -- whose mom is Demia Moore -- tells this weekend's Page Six magazine. "My dad and Ashton get along — it's not weird. There's no jealousy or drama.

"If we weren't all entirely morally opposed to doing a reality show," she adds, "I guarantee it would be the best-selling reality show ever."

Rumer adds that Kutcher is "so cool. He definitely is a father-slash-older brother figure, but at the same time I can still go out with him and have an amazing time."

And Rumer's thankful to her parents for steering her in the right direction.

"Sure, I have my issues, but I'm not in rehab. I'm not in crazy debt. I like the fact that I didn't just get my GED, but I graduated from high school," she says. "A lot of it has to do with my parents. They have a desire to keep us [kids] grounded and give us a normal upbringing."