Natalie Portman will never get married.

The ‘Star Wars’ actress – who has been romantically linked to ‘Scrubs’ star Zach Braff, Moby and Gael Garcia Bernal – insists she doesn’t need a piece of paper to prove her commitment.

The happily single star said: “I’m into monogamy. But I’m not really into marriage. I sort of hate the legal aspect of it. What does the state have to do with it?

“Why are they making rules that say my lover can stay in the United States if they’re foreign or share my health care benefits because I’m straight - but if you’re gay, you can’t have that?”

(Scar and Nat on W)

Natalie stars alongside Scarlett Johansson in upcoming period drama ‘The Other Boleyn Girl’.

Scarlett – who was recently rumoured to be engaged to boyfriend Ryan Reynolds - also defended her views on monogamy and AIDS testing.

In a joint interview with W magazine, Scarlett said: “I’ve been battered for saying that I don’t believe humans are monogamous by nature. The response was, like, ‘What a ho-bag!’ I didn’t mean that I don’t practice monogamy in my own life - of course I do! I’m not going to be in some tarty relationship.

“I remember another time, I said I get tested for AIDS twice a year, and again that got spun as me being promiscuous. But I was single at the time, and I think it’s important to do that!”