SANDRA BULLOCK’s friends are urging the unlucky-in-love beauty to rev up her longtime friendship with “Speed” co-star KEANU REEVES.

The Oscar-winning “Blind Side” actress and the boyishly hand­some star of the “Matrix” trilogy have shared a platonic bond since the early ’90s.

But sources say the two have decided to spend more time together after reuniting for an intimate dinner recently – and both are open to their friendship blossoming into a romance, an insider divulged.

On Oct. 26, the two enjoyed a quiet meal at Craig’s restaurant in West Hollywood with their mu­tual publicist.

“They had wine and pasta in a corner booth, talked over a pos­sible new project – and there was a spark between them like never before,” revealed the insider.

In order to keep their bud­ding new relationship on the down-low, Sandra, 47, slipped out the back of the restaurant while Keanu, also 47, left through the main entrance and sped off in a Porsche.

“Sandy’s friends have been pushing her to give a romance with Keanu a shot – he knows her better than almost anyone and has been a dear friend to her for years,” said the insider.

“And Keanu’s pals have been on him to settle down. They think Sandy would be the per­fect woman to ground the loner actor because she’s happy in her career and settled into motherhood.”

 Keanu and Sandra, who has a 22-month-old adopted son, Louis, first on  the set of “Speed” in 1993.

In 2006, they joined forces again in the romantic drama “The Lake House.” And as The ENQUIRER pre­viously reported, Keanu was a pillar of support for Sandra when her cheat­ing ex-husband Jesse James released a tell-all book in the spring.

“After being hurt so badly by Jesse, Sandy has a hard time trusting,” not­ed the insider. “But she trusts Keanu with all her heart and is willing to see where it leads.”