India, Feb. 1 -- Kevin Costner reportedly felt "sucker punched" after learning that his ex-wife, Christine Baumgartner, is engaged to financier Josh Connor-a man he once considered a friend.

Daily Mail reported that the 49-year-old businessman proposed to Baumgartner during an intimate dinner earlier this week, nearly a year after her divorce from Costner was finalized.

"Kevin said he felt sucker-punched when his kids told him about the marriage proposal," an insider told Daily Mail. "He said he would have preferred to have heard it straight from Christine, but either way, it still feels like a betrayal even after all this time."

"He just celebrated his birthday, thank God they waited at least a week to make the announcement."

"Kevin ...