It might not be the first, but the same -sex marriage proposal that happened Saturday night at the White House is the first to go viral.

Within minutes, a picture of Matthew Phelps and Ben Schock was posted by a bystander. Phelps posted his own photos Sunday on Facebook; by Monday they were everywhere.

"It wasn't something we were trying to do," Phelps told us Monday. "I just wanted to make a special night for Ben."