Keanu Reeves Sends Rumor Mill Into Overdrive With Apparent Secret Proposal To Alexandra Grant

Keanu Reeves tried to keep a low profile on March 31, when he was spotted in L.A. eyeing diamond rings at a boutique jewelry store. But a source tells OK! it was the sign his fans have been waiting for: After four years of dating, the Matrix hunk, 57, is ready to tie the knot with his girlfriend, Alexandra Grant.

“Keanu popped the question after they returned home from Europe, where he was filming back-to-back movies, and she was there the whole time to support him,” spills the source. “That’s when he realized he can’t live without her.”

It’s been a long time coming for the low-key couple, who became close after collaborating on Reeves' 2011 book, Ode to Happiness. In fact, Reeves' friends, including his Speed costar Sandra Bullock, have been prodding him to propose for months, the source shares.

KEANU REEVES SPARKS ENGAGEMENT RUMORS WITH LONG-TIME GIRLFRIEND ALEXANDRA GRANT — SEE WHY

“It was a heart-to-heart with Sandra that finally inspired him to put a ring on it,” dishes the source, “and he’s so happy that he did.”

The down-to-earth action star and the visual artist, 49, have already started planning their dream nuptials, “which will be very laid-back and take place outdoors before a small group of family and friends,” the source says. “Of course, they’re writing their own vows — and no doubt it will get very emotional.”

If anyone deserves a happy ending, it’s Reeves, who has experienced his fair share of tragedy. In 1999, his then-girlfriend, Jennifer Syme, gave birth to a stillborn daughter; two years later, she was killed in a car accident.

“Keanu’s been to hell and back,” notes an insider, “but now he finally has this wonderful woman to share his life with.” Adds the source: “Alexandra is a huge light in his life. Everyone can see how she fills him with joy.”

Prior to news of his apparent proposal, OK! reported Reeves' friends gave their seal of approval on the two spending the rest of their lives together. "His friends know how happy he’s been, he’s talked about making Alexandra his wife," a source exclusively squealed to OK!, adding that the A-lister is sure "she's the one."