Kate Hudson and Owen Wilson split

Kate Hudson and Owen Wilson have split, less than two months after rekindling their romance in Miami.

The on-again, off-again couple -- who began dating in September 2006 -- were last week rumored to be engaged, after Hudson was snapped wearing a Tiffany & Co. ring both on-and-off set of her film Bride Wars, which she's filming in Boston. It turned out, however, the ring was a prop.

"It was a pretty bad breakup," says a Wilson pal. "Owen said it was a tough one. He definitely doesn't want to dwell on it. He wants to put it behind him."

Since the split, the pair have been seen letting loose.

"[Owen] was pretty chummy with the ladies ... he was certainly doing some sweet talking," according to an onlooker. "He looked happy to be there hanging with them."

And Hudson, according to a source, "feels dumb thinking it was so serious."