Even the President of the United States has to hold his own against jealous boyfriends sometimes. Over the weekend, Obama made a rare appearance to support campaign events for Democratic Gov. Pat Quinn, who is facing a battle for re-election, according to CNN.

"Mr. President, don't touch my girlfriend," warned a jealous fiancé, as Obama cast his early ballot for the 2014 midterm elections in Chicago next to a woman named Aia Cooper at the polling station on Monday.

Identified as Mike Jones, the local voter was aiming to crack wise with the president as he walked by the two. "It was so silent in there and everyone was just taking pictures I figured I had to say something to make people laugh," Jones later told CBS Chicago.

"I really wasn't planning on it," the Commander-in-Chief assured him without looking up from the ballot, joking that Jones was "an example of a brother just embarrassing you for no reason" when a visibly flustered Cooper offered an apology on behalf of her fiancé, telling the President she knew Jones was going to "say something smart," but she didn't know what.

But the President didn't stay true to his word as a brief conversation occurred between the two after they finished voting, with Obama giving Cooper a hug and a kiss on the cheek for "something to talk about" later, UK MailOnline reported.

Obama also narrated what she might tell her family and friends about the day she met the President, "I can't believe Mike, he is such a fool."

"But fortunately, the president was nice about it, so it's alright," he added humorously.

Meanwhile, the couple claimed they had no idea the President would show up to vote at the community center in Chicago - named after the late Dr. Martin Luther King Jr., - near his family's home on Chicago's South Side.

"I didn't know what to say. I was just shaking. I said 'Oh boy, this is the president. What am I supposed to do?'" Cooper told CBS Chicago outside the polling station.

Referring to the excitement on receiving a kiss from the President, Cooper offered a quick apology to the first lady. "On the cheek, just the cheek - please, Michelle, don't come after me - just the cheek!"

In order to boost voters to go to the polls ahead of election day and encourage a higher turnout among the electorate, Obama cast his vote early for the Illinois state elections, New York Daily News reported.

"The most important office in a democracy is the office of citizen," the president told reporters at the Center, as he took advantage of the first day of early voting in Illinois. "I'm so glad I can early vote. It's so exciting. I love voting."

"Everybody in Illinois [should] vote early. It's a wonderful opportunity," he added.