Jackie O read out a letter sent to Kyle Sandilands on air. We were stunned by its contents.

A surprise letter to the Kyle and Jackie O may have finally revealed that beneath his rough exterior, Kyle Sandilands does have a heart, after all.

Jackie O surprised her breakfast radio co-host this morning, by reading a letter that a 78-year-old woman, named Carol, had written to the show.

“Today I had a most amazing experience, the likes of which I have never had before,” she wrote.

How cute is this! 77-year-old Carol was having lunch with her friend, when they went to pay… the staff at the restaurant informed them that Kyle had paid for their meals. ❤️

A photo posted by Kyle and Jackie O (@kyleandjackieo) on Oct 18, 2016 at 2:08pm PDT

Carol wrote that after dining out with a friend, Kyle had paid their meal bill for them when they went to pay.

“It was a most generous action on your part and astonishing for us. Thank you very, very much.”

Kyle tried to play the incident down, saying the owners refused to let him pay for his own meal, so instead he wanted to pay for somebody else's.

"I said let me pay for them, at least pay for something...I had the money out already," he said.

LISTEN: Meshel Laurie interviews Kyle Sandilands on the Nitty Gritty Committee podcast.