Credit: Flynet

Reese Witherspoon is ready to walk down the aisle again!

She and Hollywood agent Jim Toth are engaged, her rep confirms exclusively to "They are extremely happy," the rep tells Us.

The Oscar-winning actress, 34, began dating Toth, 40, around January 2010, shortly after her split from Jake Gyllenhaal. The duo went public with their romance in March during a romantic birthday weekend in Ojai, Calif.

Toth works as an agent at L.A.'s Creative Artists Agency; Witherspoon is a CAA client, but Toth doesn't represent her.

Witherspoon and actor Ryan Phillippe divorced in 2008 after seven years together; the former spouses share daughter Ava, 11, and Deacon, 7. Insiders told Us Weekly that Toth has "bonded" with Witherspoon's kids. "Ava and Deacon are happy with him," the source explains.

Witherspoon joked about engagement talk to Entertainment Weekly recently. "My mom always texts me, like, 'Are you getting married?'" Witherspoon said, laughing. "I'm like, 'Mom, come on! You would know if I was getting married.'"

A pal says of Witherspoon's romance with Toth: "She is definitely happy, in love and definitely wants to settle down."