Ryan Gosling and Eva Mendes Attend His Mother's Graduation

St. Catherines, Ontario, got starstruck today when Ryan Gosling and Eva Mendes both showed up for Ryan's mother Donna Gosling's graduation at Brock University.

Eyewitnesses at RadarOnline.com say everyone at the college got a little "stir crazy."

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"It's not everyday that a small town gets a big-time Hollywood celebrity here, and we certainly weren't expecting to see Ryan and Eva today!" the source told the site.

Eva and Ryan have been dating since September, and while some say the two are thisclose to cohabitating, marrying and popping out babies, the couple have remained characteristically closed-mouthed about the affair.

When Ellen DeGeneres attempted to get Eva to open up on her show, all the actress could manage was a girlish giggle and some blushing.

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Professionally, however, she told Marie Claire earlier this year that Ryan was a dream co-star when they worked together on the flick, The Place Beyond The Pines.

"He's your dream co-star," she told the magazine. "I have never felt so creatively satisfied on a film. He's amazing."