Los Angeles, June 3 (IANS): Actor Ryan Gosling and wife Eva Mendes are reportedly in a "tug-of-war" over their pre-nuptial agreement.

The couple, who have eight-month-old daughter Esmeralda together, are embroiled in a battle over how to split their fortunes if they ever called it quits on their relationship, reports femalefirst.co.uk.

"It's just business, but it's a real tug-of-war - she has more money than he does. Ryan just wants 50/50 all the way, end of story, but it's not as simple as that," a source told OK! magazine.

Friends of the pair, who have been dating since 2011, believe Gosling is using the pre-nuptial agreement as a delaying tactic to avoid tying the knot with the 41-year-old beauty.

Meanwhile, an insider previously claimed that the pair have never felt marriage is a "huge priority" for them.

The insider said: "Neither felt the need to get married, it's just not a huge priority for either of them. They know what they have."

"Ryan and Eva are super-super-private. The last thing they'd do is bring a baby... to a film set teeming with paparazzi. Ryan specifically wanted it like this -- with paparazzis following him in Atlanta, they're mostly leaving Eva and the baby alone."