"I was lying on the couch right beside her and I could hear her sniffling at what she was reading," Oliver told BuzzFeed Canada.
"She came over to me and said, 'Read this.' By the end of it I was sniffling too."
They figured out by the timing, location, and wording that Oliver must've been the one to pay for the order. He's been doing the little ritual for years, always making sure the person was told to have a "great day."
"I married the love of my life and I’ve got four great kids, so anything you can do to make someone's life a little bit better, you do it," he said. "We’re not rich but we have it all."
He doesn't know who the anonymous writer was, but he has a message for them.
"I’m glad you took it as a sign and decided to change your plans for the day. It makes me feel like a million bucks to feel like I had some part in that."