Kruse later confirmed that Dilan said yes to his proposal
And after Germany saw out the win, Kruse took the decision to propose to his other half Dilan in the post-match interview.
He took off his top and displayed a message on his vest which read "I love you. Would you like to marry me?"
Kruse's Kurdish girlfriend reportedly said 'Ere' which means yes.
And the former Borussia Monchengladbach, VfL Wolfsburg and Werder Bremen man later confirmed the news on his Instagram.
He posted a video of him in the team bus with the message: "She said yes."
It was the perfect day for Kruse, who played a key role in keeping Germany's hopes of Olympic gold alive.
The silver medallists from Rio suffered a 4-2 defeat to Brazil in their opening match at Tokyo 2020.
But they bounced back well, leading Saudi Arabia 2-1 at half-time thanks to goals from Nadiem Amiri and Ragnar Ache.
Sami Al Najei levelled things up five minutes after the break, before Kruse whipped in the perfect delivery for Uduokhai to head in their crucial third late on.
However, Germany's chances of progressing through to the quarter-finals still hang by a thread.
Presuming table toppers Brazil avoid defeat against Saudi Arabia, Kruse and co will need to beat Ivory Coast in order to secure qualification from the group stages.