Contrary to split rumours, Hollywood star Bradley Cooper is reportedly planning to take his relationship with Renee Zellweger to the next level by proposing to the actress.

"It's very serious. As soon as his mom gives the sign off, he's going to propose," a source was quoted in a report.

The actors, whose previous marriages ended in a short period, will be seen together in the upcoming thriller Case 39 and were recently photographed together during a stay in Spain.

The Hollywood stars have been dogged with romance rumours for months but they continue to remain tight-lipped on their relationship status.

"Renee's and Bradley's previous marriages both ended after only four months. They have that in common, it's one of the things that brought them together. Besides, their romance is "quite serious. Renee and Bradley are crazy about each other," the source added.

The 40-year-old actor now wants Zellweger to meet his parents with plans to spend Thanksgiving with Cooper's parents in Philadelphia at the end of the month.

"Things have been heading in this direction for the two of them for a while, but this definitely solidifies how serious they are.Renee says she's nervous, and she's really hoping it goes well. She's very excited," another source said.