Ryan Gosling has fallen "hook, line and sinker" for Eva Mendes.

The Hollywood hunk began dating Eva last year and the pair have been very public with their affection for one another since.

Ryan and Eva grew close while filming The Place Beyond The Pines, and friends say the romance is heating up by the minute.

"Ryan is obsessed - he wants to see Eva all the time. I don't know what it is about her, but he's into Eva hook, line and sinker!" a friend of Ryan's told Life & Style magazine.

"Eva's wildly passionate and impulsive. He thinks of her as the female version of himself."

Sources on the set of The Place Beyond The Pines spotted the instant attraction between the pair. One film extra says the couple weren't shy about showing their fondness for one another even in the early days of their relationship.

"Even when the cameras weren't rolling, they were really affectionate with each other," an extra on the set of the movie told the publication. "Eva was kissing Ryan's head and cuddling with him while they sat on the ground. You could tell that she really liked him."

Despite their burgeoning romance, the source has added that Ryan's mother and close-knit family are cautioning the star to slow down the whirlwind affair.

"Ryan's family is worried; Eva's so LA," Ryan's friend added.

"She's so into the business and not a super-warm person."