In pictures: how Michelle and Barack Obama made it to their 21st anniversary
But the young lawyer was soon won over.
"He walked into my office on the first day and he was cuter than I thought he would be," she admitted later.
Then Michelle took him out for a welcome lunch.
"I just found him intriguing in every way that you can imagine," she says.
"He was funny, he was self deprecating, he didn't take himself too seriously, he could laugh at himself, we clicked right away.
"He was very down to earth despite coming from this very exotic background compared to mine." Photo: © Twitter