Jessica Simpson says her boyfriend Tony Romo "saved" her.

The 'Come On Over' singer ? who is divorced from Nick Lachey ? said her relationship with American football star Romo is the first time she has felt safe in a relationship.

She said: "I would always fall for guys I wanted to save. For the first time, I fell in love with someone who saved me."

Simpson (28) said if she marries Romo, it will be the last time she ever walks down the aisle.

She told Cosmopolitan magazine: "I think any person who I'm going to date for longer than six months, I definitely am investing in something long-term. If I get married again, then it will be the last time.

"Nick will always be a part of my life, but next time, I'm marrying the right one."

Simpson said she is keen to start a family with the Dallas Cowboys star.

She said: "I'd love six kids running around, but I guess I'll have to start pretty soon. It's a beautiful relationship. Tony is everything I could dream of and I really love him. I'm proud to be his girlfriend."