Probably from 15 to 25 years ago. A guy buys a lottery ticket after talking to a waitress. (Or possibly she buys it. Not sure) He had recently broken up/gotten dumped by his GF, or wife. Anyway, the ticket wins and the ex tries to get him back. He had lightly made a promise to the waitress to split it. Don't remember much, but they "lived happily ever after".
More romance than stroke story. I searched for lottery on SOL. None of the six that popped up.
Edit
Oops. That was just the ones with lottery in the title. Checking the rest now