Jake Gyllenhaal and Reese Witherspoon Engaged?

The third time was the charm for Jake Gyllenhaal!

After two previous proposals to girlfriend Reese Witherspoon, he again got down on bended knee " and she finally said the word he's been waiting to hear: "Yes!"

When Reese arrived at Sony Studios in Culver City, Calif., to shoot an Avon commercial recently, she was wearing her new engagement ring, two set sources tell Star.

"It was gorgeous, and everyone noticed it right away. But she took it off as soon as she saw people staring. Reese stuffed it in her bag and didn't put it on again the rest of the day."

Still, the large diamond sparkler was the talk of the two-day shoot. "There was already word out that she and Jake had gotten engaged, so the ring absolutely confirmed everybody's suspicions."

I'm not entirely sold on this rumor, but I hope that Reese and Jake will get married. They seem so right for each other, you can just tell.