A decade ago, it didn’t look like Barack Obama and Joseph Biden had all that much in common. Two men from different generations. One a longtime Washington hand; the other a relatively new arrival to politics. Then in 2007, they became actual rivals during a rough Democratic Presidential primary. But fast forward to the end of the Obama presidency and they’ve developed a strong partnership. And that, as Vice President Biden might say, is a big deal. The duo has shared milestones both big and small, from winning two presidential elections to sharing a pair of matching friendship bracelets that nearly broke the Internet. Whether they’re talking shop in the Oval Office or golfing together on the White House lawn, Obama and Biden share a heartwarming rapport. So as Obama helps Biden prepare to celebrate his birthday on Nov. 20, TIME looks back at some of the pair’s most magical moments together.