The two-time Oscar winner was at a talk about his new book, "Uncommon Type: Some Stories," and at the end of the event, the superstar had a question-and-answer session that ended in his helping a man propose to his girlfriend, reported E! online.
During the session Hanks read out a question from a man named Ryan McFarling, "Here's Ryan's question, and it's for Nikki Young..."Nikki, will you marry me?"
Hanks then called the couple on stage and Ryan proposed to his Nikki in front of the audience.