Hugh Hefner Engaged to Playmate Crystal Harris (PICTURES): Only 60 Years Apart

CHICAGO (CBS/AP) Playboy magazine founder Hugh Hefner loves to love.

The 84-year-old nudie magazine mogul says he's gotten engaged again, this time to 24-year-old girlfriend Crystal Harris.

And guess what, she's a Playmate. Who would have thunk it?

PICTURES: Playmate Crystal Harris

Hefner said in a Twitter message early Sunday that he'd given a ring to Harris, saying she burst into tears.

"This is the happiest Christmas weekend in memory," he wrote.

To clear up confusion over whether the ring was simply a Christmas gift, Hefner later tweeted: "Yes, the ring I gave Crystal is an engagement ring. I didn't mean to make a mystery out of it. A very merry Christmas to all."

This would be the third marriage for Hefner, star of the E! cable TV reality series "The Girls Next Door," which chronicles Hefner's life at the Playboy Mansion. He divorced Playmate Kimberly Conrad last year.