Ryan Phillippe is "not opposed" to getting married again.

Ryan Phillippe

Ryan Phillippe

The 'Secrets and Lies' star, who divorced Oscar winner Reese Witherspoon in 2008 after nine years of marriage, says he would consider tying the knot with his girlfriend of four years, Paulina Slagter, in the future.

Asked about their relationship, the 40-year-old star, who has daughter Ava, 15, and son Deacon, 11, with Reese, said: "It's [serious]. I'm not opposed to [getting married again]."

Ryan insists he and Paulina, 24, have a lot in common and is very proud she is about to graduate from university.

He told Howard Stern on his SiriusXM radio show: "She's awesome. When people see her they have these judgments because she could be a model but she's about to graduate Stanford Law. Also what's great about it -- as you get older certain issues become more important to you. I'm very involved in civil rights issues, and so to be with a woman who could actually make an impact in the legal realm -- that's a beautiful thing."

The heartthrob, who also has daughter Kailani, three, with ex-girlfriend Alexis Knapp, claims his own career is no longer as important to him.

He said: "Since I became a dad, I love the business [but] it's not everything to me. I think that's held me back in some regards."